HSD11B2

UniProt ID: P80365
Organism: Homo sapiens
Review Status: COMPLETE
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Gene Description

11-beta-hydroxysteroid dehydrogenase type 2 (11beta-HSD2; corticosteroid 11-beta-dehydrogenase isozyme 2; SDR9C3) is an endoplasmic-reticulum-membrane, NAD+-dependent, unidirectional dehydrogenase of the short-chain dehydrogenase/reductase (SDR) family. It inactivates the glucocorticoids cortisol to cortisone and corticosterone to 11-dehydrocorticosterone, oxidizing active 11beta-hydroxyglucocorticoids to inert 11-oxosteroids using NAD+. In aldosterone-target epithelia (distal nephron, colon, salivary gland) it destroys cortisol locally, protecting the intrinsically non-selective mineralocorticoid receptor from illicit activation by cortisol and thereby conferring aldosterone specificity; it is also highly expressed in placenta, where it shields the fetus from maternal glucocorticoid. Loss-of-function variants cause the syndrome of apparent mineralocorticoid excess (AME), an autosomal-recessive juvenile low-renin hypertension with hypokalemia and metabolic alkalosis, in which cortisol illicitly activates the mineralocorticoid receptor.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0070523 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
IBA
GO_REF:0000033
ACCEPT
Summary: Phylogenetically-inferred core molecular function. HSD11B2 is an NAD+-dependent 11beta-hydroxysteroid dehydrogenase that oxidizes cortisol to cortisone; this is the correct, specific molecular-function term and the evolved core activity.
Reason: Matches the experimentally established NAD+-dependent dehydrogenase activity of the enzyme and is at the appropriate level of specificity. This is a core molecular function.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
PMID:8538347
the NAD-dependent type 2 isoform (11 beta-HSD2), first characterised in placental tissue, that is expressed in the mineralocorticoid target tissues, kidney and colon.
GO:0008211 glucocorticoid metabolic process
IBA
GO_REF:0000033
ACCEPT
Summary: Phylogenetically-inferred biological process. HSD11B2 metabolizes glucocorticoids (cortisol/corticosterone), so this is a correct core process term, if somewhat broad relative to the more specific cortisol metabolic process.
Reason: HSD11B2 is a bona fide glucocorticoid-metabolizing enzyme; this process term is well supported and represents a core biological process.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
PMID:8538347
catalyses the interconversion of hormonally active cortisol to inactive cortisone
GO:0005783 endoplasmic reticulum
IEA
GO_REF:0000044
ACCEPT
Summary: SubCell-keyword-derived ER localization. Correct but less specific than the experimentally supported endoplasmic reticulum membrane localization.
Reason: HSD11B2 is an ER-resident enzyme; the ER term is a correct (if broader) compartment. The more specific and core term is ER membrane (GO:0005789).
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
SUBCELLULAR LOCATION: Microsome
GO:0016616 oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor
IEA
GO_REF:0000117
ACCEPT
Summary: ARBA-derived broad oxidoreductase parent term. Correct as a general parent of the specific 11beta-HSD (NAD+) activity, but not informative on its own.
Reason: A correct broader parent of GO:0070523. Acceptable as a general electronic annotation; the specific term GO:0070523 captures the core function.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
GO:0070523 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
IEA
GO_REF:0000116
ACCEPT
Summary: Rhea/RHEA-mapping-derived MF, matching the curated catalytic-activity reactions (RHEA:50208 cortisol->cortisone; RHEA:42204 corticosterone->11-dehydrocorticosterone; RHEA:53116 generic). Correct core molecular function.
Reason: The Rhea reaction mappings correspond exactly to the enzyme's NAD+-dependent 11beta-HSD activity. Core molecular function (duplicate term id, correctly annotated).
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=corticosterone + NAD(+) = 11-dehydrocorticosterone + NADH +
GO:0001666 response to hypoxia
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Ensembl-projected from rat ortholog (P50233). HSD11B2 expression is modulated by hypoxia in placenta, but this is a physiological-context response term rather than a core molecular role of the enzyme.
Reason: Plausible as electronically projected regulation/response, but peripheral to the enzyme's core dehydrogenase function. Retain as non-core context.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
TISSUE SPECIFICITY: Expressed in kidney, placenta, pancreas, prostate,
GO:0002017 regulation of blood volume by renal aldosterone
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Ensembl-projected from rat ortholog. Mechanistically apt downstream physiology - by destroying cortisol in the distal nephron, HSD11B2 confers aldosterone specificity on the mineralocorticoid receptor, and its loss causes low-renin hypertension (AME). This is a downstream physiological process, not the molecular core.
Reason: Well aligned with the enzyme's role in aldosterone-target tissues (pre-receptor protection of the MR), but represents downstream physiology rather than the core molecular function. Retain as non-core.
Supporting Evidence:
PMID:8538347
is vital for dictating specificity for the mineralocorticoid receptor
file:human/HSD11B2/HSD11B2-uniprot.txt
thus protecting the
GO:0005496 steroid binding
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Ensembl-projected from rat ortholog. The enzyme binds steroid substrates (cortisol, corticosterone) as part of catalysis; substrate binding is implicit in the catalytic MF and is supporting rather than a distinct core function.
Reason: Correct (the enzyme binds steroid substrates) but subsumed by the catalytic molecular function; retain as non-core supporting activity.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
GO:0007565 female pregnancy
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Ensembl-projected from rat ortholog. Placental 11beta-HSD2 shields the fetus from maternal glucocorticoid and is highly expressed in placenta; this is a genuine physiological context but not the molecular core function.
Reason: Supported by the enzyme's high placental expression and its barrier role against maternal glucocorticoids, but represents peripheral physiology. Retain as non-core.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
TISSUE SPECIFICITY: Expressed in kidney, placenta, pancreas, prostate,
PMID:8538347
first characterised in placental tissue
GO:0008211 glucocorticoid metabolic process
IEA
GO_REF:0000107
ACCEPT
Summary: Ensembl-projected duplicate of the IBA glucocorticoid metabolic process annotation. Correct core biological process.
Reason: Duplicate of the well-supported core process term; HSD11B2 metabolizes glucocorticoids.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
GO:0009410 response to xenobiotic stimulus
IEA
GO_REF:0000107
MARK AS OVER ANNOTATED
Summary: Ensembl-projected from rat ortholog. HSD11B2 is inhibited by xenobiotics such as glycyrrhetinic acid (liquorice) and organotins, but "response to xenobiotic stimulus" implies a regulated cellular response, which is weak for this enzyme; being a drug target is not the same as mounting a xenobiotic response.
Reason: The enzyme is inhibited by xenobiotics (it is a pharmacological target), but this does not equate to the gene participating in a cellular response-to-xenobiotic process. Likely an over-annotation from electronic projection.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
ACTIVITY REGULATION: Inhibited by glycyrrhetinic acid (derived from
GO:0032094 response to food
IEA
GO_REF:0000107
MARK AS OVER ANNOTATED
Summary: Ensembl-projected from rat ortholog. A physiological-context response term with no clear connection to the enzyme's molecular mechanism in humans.
Reason: Peripheral response-to-stimulus term projected from rodent physiology, not reflecting a core function of HSD11B2. Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
GO:0032868 response to insulin
IEA
GO_REF:0000107
MARK AS OVER ANNOTATED
Summary: Ensembl-projected from rat ortholog. A physiological-context response term; not part of the enzyme's core molecular function.
Reason: Peripheral response-to-stimulus term projected from rodent data; not a core function of the enzyme. Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
GO:0045880 positive regulation of smoothened signaling pathway
IEA
GO_REF:0000107
MARK AS OVER ANNOTATED
Summary: Ensembl-projected from mouse ortholog (P51661). Proposed to act via oxidation of 7beta-hydroxycholesterol to 7-ketocholesterol, a precursor of an oxysterol that activates smoothened (SMO); this is a By-similarity, distal/indirect link not demonstrated for human HSD11B2 and using the non-physiological NADP+-dependent oxysterol activity.
Reason: Indirect, By-similarity-only pathway link via a minor oxysterol side activity; not demonstrated for the human enzyme and downstream of its molecular role. Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
which activates smoothened (SMO) and the smoothened
GO:0047022 7-beta-hydroxysteroid dehydrogenase (NADP+) activity
IEA
GO_REF:0000120
MARK AS OVER ANNOTATED
Summary: Multi-method-IEA (and mouse-ortholog-derived) minor side activity. In vitro HSD11B2 can interconvert oxysterols (7-oxocholesterol/7beta-hydroxycholesterol; 7beta,25-diOH-cholesterol) using NADP+, but this uses the opposite cofactor to its physiological NAD+-dependent dehydrogenase role and is a minor, largely By-similarity activity.
Reason: A real but minor in-vitro oxysterol activity with the non-physiological NADP+ cofactor; not the enzyme's core evolved function (NAD+-dependent 11beta-HSD). Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=7-oxocholesterol + NADPH + H(+) = 7beta-hydroxycholesterol +
GO:0048545 response to steroid hormone
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Ensembl-projected from rat ortholog. Broad response-to-steroid-hormone term; HSD11B2 acts on steroid substrates but "response to steroid hormone" is a context term rather than the enzyme's molecular role.
Reason: Broad context term subsumed by the enzyme's steroid-metabolizing function; retain as non-core rather than core.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
GO:0051287 NAD binding
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Ensembl-projected from rat ortholog. HSD11B2 is an NAD+-dependent enzyme with a Rossmann-fold NAD-binding region (residues 82-111); NAD binding is a correct supporting molecular function.
Reason: Correct (NAD+ is the physiological cofactor and the Rossmann fold binds NAD), but a supporting MF subsumed by the catalytic activity; retain as non-core.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
GO:0051384 response to glucocorticoid
IEA
GO_REF:0000107
KEEP AS NON CORE
Summary: Ensembl-projected from rat ortholog. Glucocorticoids are the enzyme's substrates; "response to glucocorticoid" is a context/substrate term rather than the core molecular function.
Reason: Reflects the substrate context of the enzyme; subsumed by its glucocorticoid-metabolizing function. Retain as non-core.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
GO:0045880 positive regulation of smoothened signaling pathway
ISS
GO_REF:0000024
MARK AS OVER ANNOTATED
Summary: ISS transfer from mouse ortholog (MGI:104720). Same indirect, By-similarity oxysterol-to-SMO link as the Ensembl-projected annotation; not demonstrated for human HSD11B2.
Reason: Indirect, similarity-based pathway link via a minor oxysterol activity; not a core function of the human enzyme (consistent with the duplicate IEA annotation). Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
which activates smoothened (SMO) and the smoothened
GO:0047022 7-beta-hydroxysteroid dehydrogenase (NADP+) activity
ISS
GO_REF:0000024
MARK AS OVER ANNOTATED
Summary: ISS transfer from mouse ortholog (P51661) of the minor NADP+-dependent oxysterol interconversion activity. Not the enzyme's core NAD+-dependent function.
Reason: Minor in-vitro oxysterol activity with the non-physiological NADP+ cofactor; consistent with the duplicate IEA annotation. Likely over-annotation relative to the core NAD+-dependent 11beta-HSD function.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=7-oxocholesterol + NADPH + H(+) = 7beta-hydroxycholesterol +
GO:0034650 cortisol metabolic process
IMP
PMID:8538347
Hypertension in the syndrome of apparent mineralocorticoid e...
ACCEPT
Summary: Experimental (IMP) annotation from the AME kindred with the R374X truncating mutation, in which NAD-dependent 11beta-HSD activity is severely attenuated and cortisol is not converted to cortisone. This is the specific, core biological process (a child of glucocorticoid metabolic process).
Reason: Directly supported experimental annotation - loss of HSD11B2 impairs cortisol->cortisone conversion, defining the enzyme's role in cortisol metabolism. Core biological process at the appropriate level of specificity.
Supporting Evidence:
PMID:8538347
catalyses the interconversion of hormonally active cortisol to inactive cortisone
PMID:8538347
NAD-dependent 11 beta-HSD activity was severely attenuated in the stillbirth placenta compared with control placental tissue
GO:0070523 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
IMP
PMID:8538347
Hypertension in the syndrome of apparent mineralocorticoid e...
ACCEPT
Summary: Experimental (IMP) annotation - the AME-causing R374X truncating mutation severely attenuates NAD-dependent 11beta-HSD activity, confirming the enzyme's core NAD+-dependent 11beta-hydroxysteroid dehydrogenase function.
Reason: Directly supported experimental molecular-function annotation; the loss-of-function mutation abolishes the NAD-dependent dehydrogenase activity. Core molecular function.
Supporting Evidence:
PMID:8538347
NAD-dependent 11 beta-HSD activity was severely attenuated in the stillbirth placenta compared with control placental tissue
GO:0005789 endoplasmic reticulum membrane
TAS
Reactome:R-HSA-194023
ACCEPT
Summary: Reactome TAS localization to the ER membrane, consistent with experimental evidence that HSD11B2 is an ER-membrane-anchored enzyme (its N-terminal anchor determines orientation in the ER membrane). Core cellular localization.
Reason: Well supported (Reactome plus experimental UniProt evidence); the enzyme is an ER-membrane protein. Core cellular component.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
SUBCELLULAR LOCATION: Microsome
GO:0005789 endoplasmic reticulum membrane
TAS
Reactome:R-HSA-9759259
ACCEPT
Summary: Reactome TAS localization to the ER membrane (duplicate term id from a second Reactome reaction). Consistent with the enzyme's ER-membrane residence.
Reason: Duplicate of the well-supported ER-membrane localization; correct core cellular component.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
SUBCELLULAR LOCATION: Microsome

Core Functions

NAD+-dependent 11beta-hydroxysteroid dehydrogenase that oxidizes active 11beta-hydroxyglucocorticoids (cortisol, corticosterone) to inactive 11-oxosteroids (cortisone, 11-dehydrocorticosterone) on the endoplasmic reticulum membrane, thereby inactivating glucocorticoids and, in aldosterone-target epithelia, protecting the mineralocorticoid receptor from illicit activation by cortisol.

Supporting Evidence:
  • PMID:8538347
    catalyses the interconversion of hormonally active cortisol to inactive cortisone
  • file:human/HSD11B2/HSD11B2-uniprot.txt
    Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);

References

Manual transfer of experimentally-verified manual GO annotation data to orthologs by curator judgment of sequence similarity
Annotation inferences using phylogenetic trees
Gene Ontology annotation based on UniProtKB/Swiss-Prot Subcellular Location vocabulary mapping, accompanied by conservative changes to GO terms applied by UniProt
Automatic transfer of experimentally verified manual GO annotation data to orthologs using Ensembl Compara
Automatic Gene Ontology annotation based on Rhea mapping
Electronic Gene Ontology annotations created by ARBA machine learning models
Combined Automated Annotation using Multiple IEA Methods
Hypertension in the syndrome of apparent mineralocorticoid excess due to mutation of the 11 beta-hydroxysteroid dehydrogenase type 2 gene.
Reactome:R-HSA-194023
HSD11B2,HSD11B1 dimer oxidise CORT to COR
Reactome:R-HSA-9759259
HSD11B2 dehydrogenates PREDL to PREDN
file:human/HSD11B2/HSD11B2-uniprot.txt
UniProtKB entry P80365 (DHI2_HUMAN), 11-beta-hydroxysteroid dehydrogenase type 2

📚 Additional Documentation

Notes

(HSD11B2-notes.md)

HSD11B2 (P80365) review notes

Verified core biology (from UniProt P80365 + PMID:8538347 abstract + Reactome)

HSD11B2 = 11-beta-hydroxysteroid dehydrogenase type 2 (corticosteroid 11-beta-dehydrogenase
isozyme 2; SDR9C3). Short-chain dehydrogenase/reductase (SDR) family, Rossmann-fold NAD-binding
domain (UniProt: Pfam PF00106 adh_short; PROSITE ADH_SHORT; act site Tyr232 proton acceptor;
NAD binding 82..111).

Molecular function. NAD(+)-dependent 11beta-hydroxysteroid dehydrogenase. Oxidises active
11beta-hydroxyglucocorticoids to inactive 11-oxosteroids: cortisol -> cortisone (RHEA:50208),
corticosterone -> 11-dehydrocorticosterone (RHEA:42204), and the generic reaction
"11beta-hydroxysteroid + NAD+ = 11-oxosteroid + NADH + H+" (RHEA:53116). PhysiologicalDirection
is left-to-right (unidirectional dehydrogenase in vivo), in contrast to HSD11B1 which acts as an
11-oxosteroid reductase. UniProt FUNCTION: "Catalyzes the conversion of biologically active
11beta-hydroxyglucocorticoids (11beta-hydroxysteroid) such as cortisol, to inactive
11-ketoglucocorticoids (11-oxosteroid) such as cortisone, in the presence of NAD(+)".
KM for cortisol ~26-84 nM; for corticosterone ~5-6 nM (high-affinity). Uses NAD+ (not NADP+)
as cofactor — Glu115 in cofactor-binding domain dictates NAD+ specificity (mutagenesis
E115K/Q abolishes cofactor specificity, PubMed:11238516).

Physiological role. UniProt: "Functions as a dehydrogenase (oxidase), thereby decreasing
the concentration of active glucocorticoids, thus protecting the nonselective mineralocorticoid
receptor from occupation by glucocorticoids." In aldosterone-target epithelia (distal nephron,
colon, salivary gland) it pre-receptor destroys cortisol locally, conferring aldosterone
specificity on the (intrinsically non-selective) mineralocorticoid receptor NR3C2. PMID:8538347
abstract: "11 beta-hydroxysteroid dehydrogenase (11 beta-HSD) catalyses the interconversion of
hormonally active cortisol to inactive cortisone and is vital for dictating specificity for the
mineralocorticoid receptor." Highly expressed in placenta (shields fetus from maternal
glucocorticoid) — HPA tissue enrichment: intestine, kidney, salivary gland. Also interacts with
ligand-free cytoplasmic NR3C2 (PubMed:11350956).

Localization. ER membrane (GO:0005789), microsome. N-terminal anchor sequence determines
orientation in the ER membrane (PubMed:10497248). SubCell keyword -> GO:0005783 ER (IEA).

Disease. Loss-of-function variants cause Apparent Mineralocorticoid Excess (AME, MIM:218030),
an autosomal-recessive low-renin juvenile hypertension with hypokalemia/metabolic alkalosis,
nephrocalcinosis; cortisol illicitly activates the MR. Many characterized AME variants in UniProt
(R208C/H, R213C, A328V, RY337-338->H, R374X truncation etc.), all reducing/abolishing enzyme
activity. Liquorice (glycyrrhetinic acid) inhibits the enzyme -> acquired AME-like hypertension.
PMID:8538347 = R374X (374..405 del) truncation in AME kindred; supports both cortisol metabolic
process (IMP) and 11beta-HSD (NAD+) activity (IMP).

Secondary / minor activities (over-annotation candidates)

  • 11-oxidation of 11beta-hydroxyandrogens to 11-ketoandrogens (11beta-hydroxytestosterone ->
    11-ketotestosterone; 11beta-OH-androstenedione -> 11-ketoandrostenedione), RHEA:69368/69408
    (PubMed:22796344, 23685396, 27927697). Real human activity but part of same 11beta-HSD MF
    (same enzyme, extended substrate set) — captured by the general 11beta-HSD MF term.
  • 7-beta-hydroxysteroid dehydrogenase (NADP+) activity GO:0047022: only By similarity to
    P51661 (mouse) / one in-vitro oxysterol paper (7beta-hydroxycholesterol -> 7-ketocholesterol,
    and 7beta,25-diOH-chol -> 7-oxo,25-OH-chol, PubMed:30902677). NADP+, opposite cofactor to the
    physiological NAD+ dehydrogenase; a minor side activity -> MARK_AS_OVER_ANNOTATED (not the
    core/evolved MF; wrong cofactor for the enzyme's physiological role).
  • positive regulation of smoothened signaling pathway GO:0045880 (IEA GO_REF:0000107 from
    mouse P51661; ISS GO_REF:0000024 from MGI): distal, By-similarity-only, via 7-ketocholesterol ->
    7-keto,27-OH-cholesterol (an SMO activator). Not demonstrated for human HSD11B2 and downstream/
    indirect -> MARK_AS_OVER_ANNOTATED.

Ensembl-projected (GO_REF:0000107, ECO:0000265 from rat P50233) BP terms

These are electronically projected from rat ortholog experimental data. Adjudication:
- GO:0008211 glucocorticoid metabolic process — CORE, well supported (dup of IBA). ACCEPT.
- GO:0002017 regulation of blood volume by renal aldosterone — mechanistically apt (pre-receptor
protection of MR in distal nephron confers aldosterone specificity; AME is low-renin
hypertension). KEEP_AS_NON_CORE (downstream physiology, not the molecular core).
- GO:0007565 female pregnancy — placental 11beta-HSD2 shields fetus from maternal glucocorticoid;
plausible, high placental expression. KEEP_AS_NON_CORE.
- GO:0051384 response to glucocorticoid — substrate/context term; KEEP_AS_NON_CORE.
- GO:0048545 response to steroid hormone — broad parent of the above; KEEP_AS_NON_CORE.
- GO:0001666 response to hypoxia — HSD11B2 is placental/hypoxia-regulated in rat; peripheral.
KEEP_AS_NON_CORE.
- GO:0009410 response to xenobiotic stimulus — inhibited by liquorice/xenobiotics but "response
to" implies a regulated cellular response, weak for this enzyme; MARK_AS_OVER_ANNOTATED.
- GO:0032094 response to food, GO:0032868 response to insulin — physiological-context projections
from rat; peripheral, not the gene's molecular role. MARK_AS_OVER_ANNOTATED.
- GO:0005496 steroid binding (MF, ECO:0000265) — substrate binding implicit in the catalytic MF;
keep as supporting/non-core. KEEP_AS_NON_CORE.

MF / broad-parent electronic terms

  • GO:0016616 oxidoreductase activity, acting on CH-OH group of donors, NAD or NADP as acceptor
    (ARBA IEA) — correct but a broad parent of GO:0070523. ACCEPT (acceptable broader IEA).
  • GO:0051287 NAD binding (MF) — correct (NAD+-dependent enzyme, Rossmann fold). KEEP_AS_NON_CORE
    (supporting MF, not the core catalytic function).

Core function synthesis

  • MF: GO:0070523 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
  • BP: GO:0034650 cortisol metabolic process (and its parent GO:0008211 glucocorticoid metabolic process)
  • CC: GO:0005789 endoplasmic reticulum membrane

📄 View Raw YAML

id: P80365
gene_symbol: HSD11B2
product_type: PROTEIN
status: COMPLETE
taxon:
  id: NCBITaxon:9606
  label: Homo sapiens
description: 11-beta-hydroxysteroid dehydrogenase type 2 (11beta-HSD2; corticosteroid
  11-beta-dehydrogenase isozyme 2; SDR9C3) is an endoplasmic-reticulum-membrane,
  NAD+-dependent, unidirectional dehydrogenase of the short-chain dehydrogenase/reductase
  (SDR) family. It inactivates the glucocorticoids cortisol to cortisone and corticosterone
  to 11-dehydrocorticosterone, oxidizing active 11beta-hydroxyglucocorticoids to inert
  11-oxosteroids using NAD+. In aldosterone-target epithelia (distal nephron, colon,
  salivary gland) it destroys cortisol locally, protecting the intrinsically non-selective
  mineralocorticoid receptor from illicit activation by cortisol and thereby conferring
  aldosterone specificity; it is also highly expressed in placenta, where it shields
  the fetus from maternal glucocorticoid. Loss-of-function variants cause the syndrome
  of apparent mineralocorticoid excess (AME), an autosomal-recessive juvenile low-renin
  hypertension with hypokalemia and metabolic alkalosis, in which cortisol illicitly
  activates the mineralocorticoid receptor.
existing_annotations:
- term:
    id: GO:0070523
    label: 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  qualifier: enables
  review:
    summary: Phylogenetically-inferred core molecular function. HSD11B2 is an NAD+-dependent
      11beta-hydroxysteroid dehydrogenase that oxidizes cortisol to cortisone; this
      is the correct, specific molecular-function term and the evolved core activity.
    action: ACCEPT
    reason: Matches the experimentally established NAD+-dependent dehydrogenase activity
      of the enzyme and is at the appropriate level of specificity. This is a core
      molecular function.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
    - reference_id: PMID:8538347
      supporting_text: the NAD-dependent type 2 isoform (11 beta-HSD2), first characterised
        in placental tissue, that is expressed in the mineralocorticoid target tissues,
        kidney and colon.
- term:
    id: GO:0008211
    label: glucocorticoid metabolic process
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  qualifier: involved_in
  review:
    summary: Phylogenetically-inferred biological process. HSD11B2 metabolizes glucocorticoids
      (cortisol/corticosterone), so this is a correct core process term, if somewhat
      broad relative to the more specific cortisol metabolic process.
    action: ACCEPT
    reason: HSD11B2 is a bona fide glucocorticoid-metabolizing enzyme; this process
      term is well supported and represents a core biological process.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
        the
    - reference_id: PMID:8538347
      supporting_text: catalyses the interconversion of hormonally active cortisol
        to inactive cortisone
- term:
    id: GO:0005783
    label: endoplasmic reticulum
  evidence_type: IEA
  original_reference_id: GO_REF:0000044
  qualifier: located_in
  review:
    summary: SubCell-keyword-derived ER localization. Correct but less specific than
      the experimentally supported endoplasmic reticulum membrane localization.
    action: ACCEPT
    reason: HSD11B2 is an ER-resident enzyme; the ER term is a correct (if broader)
      compartment. The more specific and core term is ER membrane (GO:0005789).
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: 'SUBCELLULAR LOCATION: Microsome'
- term:
    id: GO:0016616
    label: oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP
      as acceptor
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  qualifier: enables
  review:
    summary: ARBA-derived broad oxidoreductase parent term. Correct as a general parent
      of the specific 11beta-HSD (NAD+) activity, but not informative on its own.
    action: ACCEPT
    reason: A correct broader parent of GO:0070523. Acceptable as a general electronic
      annotation; the specific term GO:0070523 captures the core function.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
- term:
    id: GO:0070523
    label: 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000116
  qualifier: enables
  review:
    summary: Rhea/RHEA-mapping-derived MF, matching the curated catalytic-activity
      reactions (RHEA:50208 cortisol->cortisone; RHEA:42204 corticosterone->11-dehydrocorticosterone;
      RHEA:53116 generic). Correct core molecular function.
    action: ACCEPT
    reason: The Rhea reaction mappings correspond exactly to the enzyme's NAD+-dependent
      11beta-HSD activity. Core molecular function (duplicate term id, correctly annotated).
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Reaction=corticosterone + NAD(+) = 11-dehydrocorticosterone
        + NADH +
- term:
    id: GO:0001666
    label: response to hypoxia
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected from rat ortholog (P50233). HSD11B2 expression is modulated
      by hypoxia in placenta, but this is a physiological-context response term rather
      than a core molecular role of the enzyme.
    action: KEEP_AS_NON_CORE
    reason: Plausible as electronically projected regulation/response, but peripheral
      to the enzyme's core dehydrogenase function. Retain as non-core context.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: 'TISSUE SPECIFICITY: Expressed in kidney, placenta, pancreas,
        prostate,'
- term:
    id: GO:0002017
    label: regulation of blood volume by renal aldosterone
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected from rat ortholog. Mechanistically apt downstream physiology
      - by destroying cortisol in the distal nephron, HSD11B2 confers aldosterone
      specificity on the mineralocorticoid receptor, and its loss causes low-renin
      hypertension (AME). This is a downstream physiological process, not the molecular
      core.
    action: KEEP_AS_NON_CORE
    reason: Well aligned with the enzyme's role in aldosterone-target tissues (pre-receptor
      protection of the MR), but represents downstream physiology rather than the
      core molecular function. Retain as non-core.
    supported_by:
    - reference_id: PMID:8538347
      supporting_text: is vital for dictating specificity for the mineralocorticoid
        receptor
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: thus protecting the
- term:
    id: GO:0005496
    label: steroid binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: enables
  review:
    summary: Ensembl-projected from rat ortholog. The enzyme binds steroid substrates
      (cortisol, corticosterone) as part of catalysis; substrate binding is implicit
      in the catalytic MF and is supporting rather than a distinct core function.
    action: KEEP_AS_NON_CORE
    reason: Correct (the enzyme binds steroid substrates) but subsumed by the catalytic
      molecular function; retain as non-core supporting activity.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
- term:
    id: GO:0007565
    label: female pregnancy
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected from rat ortholog. Placental 11beta-HSD2 shields the
      fetus from maternal glucocorticoid and is highly expressed in placenta; this
      is a genuine physiological context but not the molecular core function.
    action: KEEP_AS_NON_CORE
    reason: Supported by the enzyme's high placental expression and its barrier role
      against maternal glucocorticoids, but represents peripheral physiology. Retain
      as non-core.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: 'TISSUE SPECIFICITY: Expressed in kidney, placenta, pancreas,
        prostate,'
    - reference_id: PMID:8538347
      supporting_text: first characterised in placental tissue
- term:
    id: GO:0008211
    label: glucocorticoid metabolic process
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected duplicate of the IBA glucocorticoid metabolic process
      annotation. Correct core biological process.
    action: ACCEPT
    reason: Duplicate of the well-supported core process term; HSD11B2 metabolizes
      glucocorticoids.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
        the
- term:
    id: GO:0009410
    label: response to xenobiotic stimulus
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected from rat ortholog. HSD11B2 is inhibited by xenobiotics
      such as glycyrrhetinic acid (liquorice) and organotins, but "response to xenobiotic
      stimulus" implies a regulated cellular response, which is weak for this enzyme;
      being a drug target is not the same as mounting a xenobiotic response.
    action: MARK_AS_OVER_ANNOTATED
    reason: The enzyme is inhibited by xenobiotics (it is a pharmacological target),
      but this does not equate to the gene participating in a cellular response-to-xenobiotic
      process. Likely an over-annotation from electronic projection.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: 'ACTIVITY REGULATION: Inhibited by glycyrrhetinic acid (derived
        from'
- term:
    id: GO:0032094
    label: response to food
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected from rat ortholog. A physiological-context response
      term with no clear connection to the enzyme's molecular mechanism in humans.
    action: MARK_AS_OVER_ANNOTATED
    reason: Peripheral response-to-stimulus term projected from rodent physiology,
      not reflecting a core function of HSD11B2. Likely over-annotation.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
        the
- term:
    id: GO:0032868
    label: response to insulin
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected from rat ortholog. A physiological-context response
      term; not part of the enzyme's core molecular function.
    action: MARK_AS_OVER_ANNOTATED
    reason: Peripheral response-to-stimulus term projected from rodent data; not a
      core function of the enzyme. Likely over-annotation.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
        the
- term:
    id: GO:0045880
    label: positive regulation of smoothened signaling pathway
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected from mouse ortholog (P51661). Proposed to act via oxidation
      of 7beta-hydroxycholesterol to 7-ketocholesterol, a precursor of an oxysterol
      that activates smoothened (SMO); this is a By-similarity, distal/indirect link
      not demonstrated for human HSD11B2 and using the non-physiological NADP+-dependent
      oxysterol activity.
    action: MARK_AS_OVER_ANNOTATED
    reason: Indirect, By-similarity-only pathway link via a minor oxysterol side activity;
      not demonstrated for the human enzyme and downstream of its molecular role.
      Likely over-annotation.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: which activates smoothened (SMO) and the smoothened
- term:
    id: GO:0047022
    label: 7-beta-hydroxysteroid dehydrogenase (NADP+) activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  qualifier: enables
  review:
    summary: Multi-method-IEA (and mouse-ortholog-derived) minor side activity. In
      vitro HSD11B2 can interconvert oxysterols (7-oxocholesterol/7beta-hydroxycholesterol;
      7beta,25-diOH-cholesterol) using NADP+, but this uses the opposite cofactor
      to its physiological NAD+-dependent dehydrogenase role and is a minor, largely
      By-similarity activity.
    action: MARK_AS_OVER_ANNOTATED
    reason: A real but minor in-vitro oxysterol activity with the non-physiological
      NADP+ cofactor; not the enzyme's core evolved function (NAD+-dependent 11beta-HSD).
      Likely over-annotation.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Reaction=7-oxocholesterol + NADPH + H(+) = 7beta-hydroxycholesterol
        +
- term:
    id: GO:0048545
    label: response to steroid hormone
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected from rat ortholog. Broad response-to-steroid-hormone
      term; HSD11B2 acts on steroid substrates but "response to steroid hormone" is
      a context term rather than the enzyme's molecular role.
    action: KEEP_AS_NON_CORE
    reason: Broad context term subsumed by the enzyme's steroid-metabolizing function;
      retain as non-core rather than core.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
- term:
    id: GO:0051287
    label: NAD binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: enables
  review:
    summary: Ensembl-projected from rat ortholog. HSD11B2 is an NAD+-dependent enzyme
      with a Rossmann-fold NAD-binding region (residues 82-111); NAD binding is a
      correct supporting molecular function.
    action: KEEP_AS_NON_CORE
    reason: Correct (NAD+ is the physiological cofactor and the Rossmann fold binds
      NAD), but a supporting MF subsumed by the catalytic activity; retain as non-core.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
- term:
    id: GO:0051384
    label: response to glucocorticoid
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  qualifier: involved_in
  review:
    summary: Ensembl-projected from rat ortholog. Glucocorticoids are the enzyme's
      substrates; "response to glucocorticoid" is a context/substrate term rather
      than the core molecular function.
    action: KEEP_AS_NON_CORE
    reason: Reflects the substrate context of the enzyme; subsumed by its glucocorticoid-metabolizing
      function. Retain as non-core.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
        the
- term:
    id: GO:0045880
    label: positive regulation of smoothened signaling pathway
  evidence_type: ISS
  original_reference_id: GO_REF:0000024
  qualifier: involved_in
  review:
    summary: ISS transfer from mouse ortholog (MGI:104720). Same indirect, By-similarity
      oxysterol-to-SMO link as the Ensembl-projected annotation; not demonstrated
      for human HSD11B2.
    action: MARK_AS_OVER_ANNOTATED
    reason: Indirect, similarity-based pathway link via a minor oxysterol activity;
      not a core function of the human enzyme (consistent with the duplicate IEA annotation).
      Likely over-annotation.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: which activates smoothened (SMO) and the smoothened
- term:
    id: GO:0047022
    label: 7-beta-hydroxysteroid dehydrogenase (NADP+) activity
  evidence_type: ISS
  original_reference_id: GO_REF:0000024
  qualifier: enables
  review:
    summary: ISS transfer from mouse ortholog (P51661) of the minor NADP+-dependent
      oxysterol interconversion activity. Not the enzyme's core NAD+-dependent function.
    action: MARK_AS_OVER_ANNOTATED
    reason: Minor in-vitro oxysterol activity with the non-physiological NADP+ cofactor;
      consistent with the duplicate IEA annotation. Likely over-annotation relative
      to the core NAD+-dependent 11beta-HSD function.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: Reaction=7-oxocholesterol + NADPH + H(+) = 7beta-hydroxycholesterol
        +
- term:
    id: GO:0034650
    label: cortisol metabolic process
  evidence_type: IMP
  original_reference_id: PMID:8538347
  qualifier: involved_in
  review:
    summary: Experimental (IMP) annotation from the AME kindred with the R374X truncating
      mutation, in which NAD-dependent 11beta-HSD activity is severely attenuated
      and cortisol is not converted to cortisone. This is the specific, core biological
      process (a child of glucocorticoid metabolic process).
    action: ACCEPT
    reason: Directly supported experimental annotation - loss of HSD11B2 impairs cortisol->cortisone
      conversion, defining the enzyme's role in cortisol metabolism. Core biological
      process at the appropriate level of specificity.
    supported_by:
    - reference_id: PMID:8538347
      supporting_text: catalyses the interconversion of hormonally active cortisol
        to inactive cortisone
    - reference_id: PMID:8538347
      supporting_text: NAD-dependent 11 beta-HSD activity was severely attenuated
        in the stillbirth placenta compared with control placental tissue
- term:
    id: GO:0070523
    label: 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
  evidence_type: IMP
  original_reference_id: PMID:8538347
  qualifier: enables
  review:
    summary: Experimental (IMP) annotation - the AME-causing R374X truncating mutation
      severely attenuates NAD-dependent 11beta-HSD activity, confirming the enzyme's
      core NAD+-dependent 11beta-hydroxysteroid dehydrogenase function.
    action: ACCEPT
    reason: Directly supported experimental molecular-function annotation; the loss-of-function
      mutation abolishes the NAD-dependent dehydrogenase activity. Core molecular
      function.
    supported_by:
    - reference_id: PMID:8538347
      supporting_text: NAD-dependent 11 beta-HSD activity was severely attenuated
        in the stillbirth placenta compared with control placental tissue
- term:
    id: GO:0005789
    label: endoplasmic reticulum membrane
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-194023
  qualifier: located_in
  review:
    summary: Reactome TAS localization to the ER membrane, consistent with experimental
      evidence that HSD11B2 is an ER-membrane-anchored enzyme (its N-terminal anchor
      determines orientation in the ER membrane). Core cellular localization.
    action: ACCEPT
    reason: Well supported (Reactome plus experimental UniProt evidence); the enzyme
      is an ER-membrane protein. Core cellular component.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: 'SUBCELLULAR LOCATION: Microsome'
- term:
    id: GO:0005789
    label: endoplasmic reticulum membrane
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-9759259
  qualifier: located_in
  review:
    summary: Reactome TAS localization to the ER membrane (duplicate term id from a
      second Reactome reaction). Consistent with the enzyme's ER-membrane residence.
    action: ACCEPT
    reason: Duplicate of the well-supported ER-membrane localization; correct core
      cellular component.
    supported_by:
    - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
      supporting_text: 'SUBCELLULAR LOCATION: Microsome'
core_functions:
- description: NAD+-dependent 11beta-hydroxysteroid dehydrogenase that oxidizes active
    11beta-hydroxyglucocorticoids (cortisol, corticosterone) to inactive 11-oxosteroids
    (cortisone, 11-dehydrocorticosterone) on the endoplasmic reticulum membrane, thereby
    inactivating glucocorticoids and, in aldosterone-target epithelia, protecting
    the mineralocorticoid receptor from illicit activation by cortisol.
  molecular_function:
    id: GO:0070523
    label: 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
  directly_involved_in:
  - id: GO:0034650
    label: cortisol metabolic process
  - id: GO:0008211
    label: glucocorticoid metabolic process
  locations:
  - id: GO:0005789
    label: endoplasmic reticulum membrane
  supported_by:
  - reference_id: PMID:8538347
    supporting_text: catalyses the interconversion of hormonally active cortisol to
      inactive cortisone
  - reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
    supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
references:
- id: GO_REF:0000024
  title: Manual transfer of experimentally-verified manual GO annotation data to orthologs
    by curator judgment of sequence similarity
  findings: []
- id: GO_REF:0000033
  title: Annotation inferences using phylogenetic trees
  findings: []
- id: GO_REF:0000044
  title: Gene Ontology annotation based on UniProtKB/Swiss-Prot Subcellular Location
    vocabulary mapping, accompanied by conservative changes to GO terms applied by
    UniProt
  findings: []
- id: GO_REF:0000107
  title: Automatic transfer of experimentally verified manual GO annotation data to
    orthologs using Ensembl Compara
  findings: []
- id: GO_REF:0000116
  title: Automatic Gene Ontology annotation based on Rhea mapping
  findings: []
- id: GO_REF:0000117
  title: Electronic Gene Ontology annotations created by ARBA machine learning models
  findings: []
- id: GO_REF:0000120
  title: Combined Automated Annotation using Multiple IEA Methods
  findings: []
- id: PMID:8538347
  title: Hypertension in the syndrome of apparent mineralocorticoid excess due to
    mutation of the 11 beta-hydroxysteroid dehydrogenase type 2 gene.
  findings: []
  reference_review:
    relevance: HIGH
    correctness: VERIFIED
    review_notes: PubMed-verified case report of an AME kindred with an R374X truncating
      mutation showing severely attenuated NAD-dependent 11beta-HSD activity; directly
      supports the enzyme's NAD+-dependent 11beta-HSD activity and its role in cortisol
      metabolism and mineralocorticoid receptor specificity.
- id: Reactome:R-HSA-194023
  title: HSD11B2,HSD11B1 dimer oxidise CORT to COR
  findings: []
- id: Reactome:R-HSA-9759259
  title: HSD11B2 dehydrogenates PREDL to PREDN
  findings: []
- id: file:human/HSD11B2/HSD11B2-uniprot.txt
  title: UniProtKB entry P80365 (DHI2_HUMAN), 11-beta-hydroxysteroid dehydrogenase
    type 2
  findings: []