X-108157413-G-T

Position:

• chrX-108157413-G-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_033641.4(COL4A6):​c.4813-153C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0253 in 111,404 control chromosomes in the GnomAD database, including 89 homozygotes. There are 711 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.025 (89 hom., 711 hem., cov: 22)
• Consequence: COL4A6 NM_033641.4 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.0820

Genes affected

COL4A6 (HGNC:2208): (collagen type IV alpha 6 chain) This gene encodes one of the six subunits of type IV collagen, the major structural component of basement membranes. Like the other members of the type IV collagen gene family, this gene is organized in a head-to-head conformation with another type IV collagen gene, alpha 5 type IV collagen, so that the gene pair shares a common promoter. Deletions in the alpha 5 gene that extend into the alpha 6 gene result in diffuse leiomyomatosis accompanying the X-linked Alport syndrome caused by the deletion in the alpha 5 gene. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2013]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BP6: Variant X-108157413-G-T is Benign according to our data. Variant chrX-108157413-G-T is described in ClinVar as [Benign]. Clinvar id is 1272419.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0852 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COL4A6	NM_033641.4	c.4813-153C>A		intron_variant		ENST00000334504.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COL4A6	ENST00000334504.12	c.4813-153C>A		intron_variant		5	NM_033641.4	P4

Frequencies

GnomAD3 genomes AF: 0.0253 AC: 2813 AN: 111352 Hom.: 89 Cov.: 22 AF XY: 0.0211 AC XY: 708 AN XY: 33520

Gnomad AFR AF: 0.0880

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00915

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000762

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000264

Gnomad OTH AF: 0.0145

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0253 AC: 2818 AN: 111404 Hom.: 89 Cov.: 22 AF XY: 0.0212 AC XY: 711 AN XY: 33582

Gnomad4 AFR AF: 0.0880

Gnomad4 AMR AF: 0.00914

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000383

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000264

Gnomad4 OTH AF: 0.0143

Alfa AF: 0.00547 Hom.: 15

Bravo AF: 0.0304

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jul 10, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	0.41
DANN	Benign	0.82

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

Other links and lift over

dbSNP: rs145750863; hg19: chrX-107400643;