Genetic Variant NM_001882.4:c.227G>T (chr5-76954080-G-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001882.4(CRHBP):c.227G>T(p.Arg76Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000235 in 1,613,916 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

CRHBP
NM_001882.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0850

Variant links:

Genes affected

CRHBP (HGNC:2356): (corticotropin releasing hormone binding protein) Corticotropin-releasing hormone is a potent stimulator of synthesis and secretion of preopiomelanocortin-derived peptides. Although CRH concentrations in the human peripheral circulation are normally low, they increase throughout pregnancy and fall rapidly after parturition. Maternal plasma CRH probably originates from the placenta. Human plasma contains a CRH-binding protein which inactivates CRH and which may prevent inappropriate pituitary-adrenal stimulation in pregnancy. [provided by RefSeq, Jul 2008]

CRHBP links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05781293).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CRHBP	NM_001882.4 link	c.227G>T	p.Arg76Leu	missense_variant	Exon 3 of 7	ENST00000274368.9	NP_001873.2	P24387
CRHBP	XM_047416736.1 link	c.41G>T	p.Arg14Leu	missense_variant	Exon 2 of 6		XP_047272692.1
CRHBP	XR_948235.4 link	n.317G>T		non_coding_transcript_exon_variant	Exon 3 of 8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CRHBP	ENST00000274368.9 link	c.227G>T	p.Arg76Leu	missense_variant	Exon 3 of 7	1	NM_001882.4	ENSP00000274368.4	P24387
CRHBP	ENST00000506501.1 link	c.227G>T	p.Arg76Leu	missense_variant	Exon 3 of 5	1		ENSP00000426097.1	D6RHH7
CRHBP	ENST00000512446.1 link	n.330G>T		non_coding_transcript_exon_variant	Exon 2 of 4	2

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000506

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000361

AC:

AN:

249512

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

135032

show subpopulations

Gnomad AFR exome

AF:

0.000494

Gnomad AMR exome

AF:

0.0000289

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

AF:

0.0000103

AC:

AN:

1461584

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727112

show subpopulations

Gnomad4 AFR exome

AF:

0.000418

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000151

AC:

AN:

152332

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.000505

Gnomad4 AMR

AF:

0.0000653

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

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.000162

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 27, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.227G>T (p.R76L) alteration is located in exon 3 (coding exon 3) of the CRHBP gene. This alteration results from a G to T substitution at nucleotide position 227, causing the arginine (R) at amino acid position 76 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.40

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.57

D;.

Eigen

Benign

-0.48

Eigen_PC

Benign

-0.56

FATHMM_MKL

Benign

0.31

LIST_S2

Uncertain

0.94

D;D

M_CAP

Benign

0.038

MetaRNN

Benign

0.058

T;T

MetaSVM

Benign

-0.84

MutationAssessor

Uncertain

2.3

M;.

PrimateAI

Benign

0.28

PROVEAN

Uncertain

-2.6

D;D

REVEL

Benign

0.22

Sift

Benign

0.093

T;T

Sift4G

Uncertain

0.017

D;D

Polyphen

0.55

P;B

Vest4

0.42

MVP

0.32

MPC

0.83

ClinPred

0.54

GERP RS

-2.2

Varity_R

0.077

gMVP

0.59

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over