CYP11B2

Chr 8AR

cytochrome P450 family 11 subfamily B member 2

This enzyme catalyzes the biosynthesis of aldosterone, the primary mineralocorticoid responsible for salt and water homeostasis and blood pressure regulation. Mutations cause autosomal recessive congenital hypoaldosteronism (corticosterone methyl oxidase deficiency types I and II), presenting with salt wasting, dehydration, and failure to thrive in infancy. The gene shows tolerance to loss-of-function variants (LOEUF 1.572), consistent with the recessive inheritance pattern where both alleles must be affected to cause disease.

OMIMResearchSummary from RefSeq, OMIM, UniProt
DNmechanismARLOEUF 1.574 OMIM phenotypes
Clinical SummaryCYP11B2
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Gene-Disease Validity (ClinGen)
familial hyperreninemic hypoaldosteronism type 2 · ARDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
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Clinical Trials
8 active or recruiting trials — potential therapeutic options may be available
Some data sources returned errors (1)

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Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
1.57LOEUF
pLI 0.000
Z-score -0.60
OE 1.13 (0.831.57)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
-0.85Z-score
OE missense 1.14 (1.041.25)
330 obs / 289.4 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE1.13 (0.831.57)
00.351.4
Missense OE1.14 (1.041.25)
00.61.4
Synonymous OE1.14
01.21.6
LoF obs/exp: 26 / 22.9Missense obs/exp: 330 / 289.4Syn Z: -1.18
DN
0.6549th %ile
GOF
0.6346th %ile
LOF
0.3551th %ile

The highest-scoring mechanism for this gene is dominant-negative.

DNprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

CYP11B2 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

Primary AldosteronismAdrenal Cushing SyndromePheochromocytoma

Postmortem Evaluation of Adrenal and Other Endocrine Tumors in Patients With Sudden Death

ACTIVE NOT RECRUITING
NCT05446779Helsinki University Central HospitalStarted 2022-02-03
Adrenal aldosterone synthase (CYP11B2) stainingAdrenal cortisol synthase (CYP11B1) stainingHistopathological analysis
Primary AldosteronismSecondary HypertensionAldosterone-Producing Adenoma

PETAL Trial: Impact of Gallium-68 Pentixafor PET-CT on Surgical Outcomes in Primary Aldosteronism

RECRUITING
NCT07027254Phase NASeoul National University HospitalStarted 2025-06-25
68Ga-pentixafor PET/CT
Breast Cancer and Pregnancy

Registry Study of Pregnancy and Breast Cancer

ACTIVE NOT RECRUITING
NCT04603820Spanish Breast Cancer Research GroupStarted 2019-11-18
Primary Aldosteronism

Subtyping Primary Aldosteronism With Para-chloro-2-[18F]Fluoroethyl-etomidate

RECRUITING
NCT06616142Phase PHASE1, PHASE2University Medical Center GroningenStarted 2024-11-06
[18F]CETO tracerDexamethasone oralAdrenal vein sampling
Uncontrolled Hypertension

A Phase I Trial of QLS1410 in Healthy Chinese Adults and Participants With Mild Essential Hypertension

NOT YET RECRUITING
NCT07152444Phase PHASE1Qilu Pharmaceutical Co., Ltd.Started 2025-09
QLS1410 (CYP11B2 inhibitor)placebo
Hyperaldosteronism Primary

Is the Evolution of the Aldosterone-renin Ratio Pre- Versus Post-operative on Day 1 Following Unilateral Adrenalectomy for Primary Hyperaldosteronism Predictive of Blood Pressure Outcomes

NOT YET RECRUITING
NCT07110155Central Hospital, Nancy, FranceStarted 2025-08-15
Primary Aldosteronism

Pathological Type,Gene Mutation and Clinical Characteristics of Unilateral Primary Aldosteronism

RECRUITING
NCT06597630Qifu LiStarted 2023-12-01
Tissue specimens were stained by histopathology of hematoxylin-eosin
Primary Aldosteronism Due to Adrenal Hyperplasia (Bilateral)

Non Invasive Imaging Methods for Detecting PA:a Clinical PET Study of 18F-Pentixather

RECRUITING
NCT06581744Phase NAFangfang SunStarted 2024-06-12
[18F]AlF-NOTA-Pentixather
Clinical Literature
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