19-49054537-G-C

Position:

• chr19-49054537-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.

The NM_001385261.1(CGB7):​c.252C>G​(p.Phe84Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 19)
  • Exomes 𝑓: 0.000016 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: CGB7 NM_001385261.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.219

Genes affected

CGB7 (HGNC:16451): (chorionic gonadotropin subunit beta 7) This gene is a member of the glycoprotein hormone beta chain family and encodes the beta 7 subunit of chorionic gonadotropin (CG). Glycoprotein hormones are heterodimers consisting of a common alpha subunit and an unique beta subunit which confers biological specificity. CG is produced by the trophoblastic cells of the placenta and stimulates the ovaries to synthesize the steroids that are essential for the maintenance of pregnancy. The beta subunit of CG is encoded by 6 genes which are arranged in tandem and inverted pairs on chromosome 19q13.3 and contiguous with the luteinizing hormone beta subunit gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CGB7	NM_001385261.1	c.252C>G	p.Phe84Leu	missense_variant	5/5	ENST00000684222.1	NP_001372190.1
CGB7	NM_033142.2	c.252C>G	p.Phe84Leu	missense_variant	5/5		NP_149133.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CGB7	ENST00000684222.1	c.252C>G	p.Phe84Leu	missense_variant	5/5		NM_001385261.1	ENSP00000507822.1
CGB7	ENST00000596965.5	c.252C>G	p.Phe84Leu	missense_variant	5/5	2		ENSP00000469076.1
CGB7	ENST00000597853.5	c.252C>G	p.Phe84Leu	missense_variant	5/5	2		ENSP00000470813.1

Frequencies

GnomAD3 genomes Cov.: 19

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000159 AC: 20 AN: 1257530 Hom.: 0 Cov.: 23 AF XY: 0.0000192 AC XY: 12 AN XY: 625884

Gnomad4 AFR exome AF: 0.0000324

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: 0.0000200

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 19

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 19, 2024

The c.252C>G (p.F84L) alteration is located in exon 3 (coding exon 3) of the CGB7 gene. This alteration results from a C to G substitution at nucleotide position 252, causing the phenylalanine (F) at amino acid position 84 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	Pathogenic	0.97
BayesDel_addAF	Benign	-0.079	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	5.7
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.66	D;D;D
Eigen	Benign	-0.36
Eigen_PC	Benign	-0.56
FATHMM_MKL	Benign	0.53	D
LIST_S2	Uncertain	0.94	D;.;.
M_CAP	Uncertain	0.12	D
MetaRNN	Uncertain	0.55	D;D;D
MetaSVM	Benign	-0.66	T
PROVEAN	Pathogenic	-4.6	D;.;.
REVEL	Benign	0.24
Sift	Uncertain	0.0030	D;.;.
Sift4G	Uncertain	0.052	T;T;T
Vest4		0.49
MVP		0.27
MPC		2.3
ClinPred		0.95	D
GERP RS		-1.2
Varity_R		0.58
gMVP		0.10

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-49557794;