22-43999571-T-A

Position:

• chr22-43999571-T-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001003828.3(PARVB):​c.109T>A​(p.Trp37Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 11/16 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PARVB NM_001003828.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.50

Genes affected

PARVB (HGNC:14653): (parvin beta) This gene encodes a member of the parvin family of actin-binding proteins, which play a role in cytoskeleton organization and cell adhesion. These proteins are associated with focal contacts and contain calponin homology domains that bind to actin filaments. This family member binds to alphaPIX and alpha-actinin, and it can inhibit the activity of integrin-linked kinase. This protein also functions in tumor suppression. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Aug 2011]

SAMM50 (HGNC:):

ACMG classification

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=0.034793705).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PARVB	NM_001003828.3	c.109T>A	p.Trp37Arg	missense_variant	2/14		NP_001003828.1
PARVB	XM_024452236.2	c.109T>A	p.Trp37Arg	missense_variant	2/13		XP_024308004.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PARVB	ENST00000406477.7	c.109T>A	p.Trp37Arg	missense_variant	2/14	1		ENSP00000384515.3
SAMM50	ENST00000465768.1	n.79+9165T>A		intron_variant		3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0 AN: 1459898 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 726358

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.40	T
BayesDel_noAF	Benign	-0.82
CADD	Benign	0.042
DANN	Benign	0.44
Eigen	Benign	-2.0
Eigen_PC	Benign	-2.1
FATHMM_MKL	Benign	0.0064	N
LIST_S2	Benign	0.16	T
M_CAP	Benign	0.0012	T
MetaRNN	Benign	0.035	T
MetaSVM	Benign	-0.96	T
PROVEAN	Benign	0.68	N
REVEL	Benign	0.0050
Sift	Benign	0.97	T
Sift4G	Pathogenic	0.0	D
Polyphen		0.0070	B
Vest4		0.012
MutPred		0.38		Gain of methylation at W37 (P = 0.0153);
MVP		0.11
MPC		0.29
ClinPred		0.054	T
GERP RS		-3.8
gMVP		0.052

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1007863; hg19: chr22-44395451;