rs1057519071

Positions:

• chrX-101242967-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 8P and 1B. PVS1 BS2_Supporting

The NM_001939.3(DRP2):​c.1039C>T​(p.Gln347*) variant causes a stop gained change. The variant allele was found at a frequency of 0.00000455 in 1,097,731 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 22)
  • Exomes 𝑓: 0.0000046 (0 hom. 2 hem.)
• Consequence: DRP2 NM_001939.3 stop_gained
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 7.17

Genes affected

DRP2 (HGNC:3032): (dystrophin related protein 2) Members of the dystrophin family of proteins perform a critical role in the maintenance of membrane-associated complexes at points of intercellular contact in vertebrate cells. The protein encoded by this gene is predicted to resemble certain short C-terminal isoforms of dystrophin and dystrophin-related protein 1 (DRP1 or utrophin). DRP2 is expressed principally in the brain and spinal cord. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2010]

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• BS2: High Hemizygotes in GnomAdExome4 at 2 geneVariant has number of hemizygotes lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DRP2	NM_001939.3	c.1039C>T	p.Gln347*	stop_gained	9/24	ENST00000395209.8	NP_001930.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DRP2	ENST00000395209.8	c.1039C>T	p.Gln347*	stop_gained	9/24	1	NM_001939.3	ENSP00000378635.3

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD3 exomes AF: 0.00000546 AC: 1 AN: 183190 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 67658

Gnomad AFR exome AF: 0.00

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: 0.0000122

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000455 AC: 5 AN: 1097731 Hom.: 0 Cov.: 29 AF XY: 0.00000551 AC XY: 2 AN XY: 363097

Gnomad4 AFR exome AF: 0.00

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: 0.00000475

Gnomad4 OTH exome AF: 0.0000217

GnomAD4 genome Cov.: 22

Alfa AF: 0.000102 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, no assertion criteria provided

literature only

OMIM

Nov 17, 2015

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.65
CADD	Pathogenic	38
DANN	Uncertain	1.0
FATHMM_MKL	Pathogenic	0.98	D
Vest4		0.92
GERP RS		5.5

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.27		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.27		Position offset: 15

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

Publications

LitVar

Other links and lift over

dbSNP: rs1057519071; hg19: chrX-100497956;