rs104894067

chr8-142877221-T-Cchr8-142877221-T-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1 PM2 PM5

The NM_000497.4(CYP11B1):c.397A>G(p.Asn133Asp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,124 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/2 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N133H) has been classified as Pathogenic.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
• Consequence: CYP11B1 NM_000497.4 missense, splice_region
• Scores: Splicing: ADA: 0.6648
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.28

Genes affected

CYP11B1 (HGNC:2591): (cytochrome P450 family 11 subfamily B member 1) This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the mitochondrial inner membrane and is involved in the conversion of progesterone to cortisol in the adrenal cortex. Mutations in this gene cause congenital adrenal hyperplasia due to 11-beta-hydroxylase deficiency. Transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Jul 2008]

GML (HGNC:4375): (glycosylphosphatidylinositol anchored molecule like) Predicted to be involved in DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest; apoptotic process; and negative regulation of cell population proliferation. Predicted to be extrinsic component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 4 uncertain in NM_000497.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr8-142877221-T-G is described in ClinVar as [Pathogenic]. Clinvar id is 1177.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CYP11B1	NM_000497.4	c.397A>G	p.Asn133Asp	missense_variant, splice_region_variant	3/9	ENST00000292427.10
CYP11B1	NM_001026213.1	c.397A>G	p.Asn133Asp	missense_variant, splice_region_variant	3/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CYP11B1	ENST00000292427.10	c.397A>G	p.Asn133Asp	missense_variant, splice_region_variant	3/9	1	NM_000497.4	P1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152124 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.00000408 AC: 1 AN: 245020 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 132422

Gnomad AFR exome AF: 0.0000651

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 40

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152124 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74300

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000756

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.23
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.47
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.70	D;.;.
Eigen	Uncertain	0.31
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Benign	0.78	T;T;T
M_CAP	Pathogenic	0.59	D
MetaRNN	Uncertain	0.57	D;D;D
MetaSVM	Uncertain	-0.25	T
MutationAssessor	Benign	1.9	L;L;.
MutationTaster	Benign	0.94	D;D;D
PrimateAI	Uncertain	0.66	T
PROVEAN	Pathogenic	-4.4	D;D;N
REVEL	Benign	0.19
Sift	Benign	0.087	T;T;T
Sift4G	Benign	0.085	T;D;T
Polyphen		0.99	D;.;D
Vest4		0.34
MVP		0.86
MPC		0.49
ClinPred		0.99	D
GERP RS		3.7
Varity_R		0.82
gMVP		0.29

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.66
dbscSNV1_RF	Benign	0.67
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs104894067; hg19: chr8-143958637;