Y-2787316-G-C

Position:

• chrY-2787316-G-C

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_Strong PP5_Moderate

The NM_003140.3(SRY):​c.288C>G​(p.Tyr96Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 0)
• Consequence: SRY NM_003140.3 stop_gained
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: -1.59

Genes affected

SRY (HGNC:11311): (sex determining region Y) This intronless gene encodes a transcription factor that is a member of the high mobility group (HMG)-box family of DNA-binding proteins. This protein is the testis-determining factor (TDF), which initiates male sex determination. Mutations in this gene give rise to XY females with gonadal dysgenesis (Swyer syndrome); translocation of part of the Y chromosome containing this gene to the X chromosome causes XX male syndrome. [provided by RefSeq, Jul 2008]

XGY2 (HGNC:34022): (XG Y-linked 2 (pseudogene))

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 15 pathogenic variants in the truncated region.
• PP5: Variant Y-2787316-G-C is Pathogenic according to our data. Variant chrY-2787316-G-C is described in ClinVar as [Pathogenic]. Clinvar id is 537738.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SRY	NM_003140.3	c.288C>G	p.Tyr96Ter	stop_gained	1/1	ENST00000383070.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SRY	ENST00000383070.2	c.288C>G	p.Tyr96Ter	stop_gained	1/1		NM_003140.3	P1
XGY2	ENST00000681940.1	n.106+12577G>C		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 0

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 0

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

46,XY sex reversal 1 Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 14, 2017

This variant is not present in population databases (ExAC no frequency). This sequence change results in a premature translational stop signal in the SRY gene (p.Tyr96*). While this is not anticipated to result in nonsense mediated decay, it is expected to delete the last 109 amino acids of the SRY protein. This variant has not been reported in the literature in individuals with SRY-related disease. For these reasons, this variant has been classified as Pathogenic. Multiple downstream truncating variants have been reported in individuals with SRY-related disease including the variant p.Glu122Asnfs*58, which has been determined to be pathogenic (PMID: 2247151). This suggests that deletion of this region of the SRY protein is causative of disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.70	D
BayesDel_noAF	Pathogenic	0.44
CADD	Uncertain	25
DANN	Uncertain	0.99
FATHMM_MKL	Benign	0.15	N
MutationTaster	Benign	1.0	A;D
Vest4		0.67
GERP RS		0.64

Splicing

Name	Calibrated prediction	Score	Prediction
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: rs1556370548; hg19: chrY-2655357;