12-53193262-G-A

Position:

• chr12-53193262-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000889.3(ITGB7):​c.1604C>T​(p.Pro535Leu) 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. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ITGB7 NM_000889.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.15

Genes affected

ITGB7 (HGNC:6162): (integrin subunit beta 7) This gene encodes a protein that is a member of the integrin superfamily. Members of this family are adhesion receptors that function in signaling from the extracellular matrix to the cell. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. The encoded protein forms dimers with an alpha4 chain or an alphaE chain and plays a role in leukocyte adhesion. Dimerization with alpha4 forms a homing receptor for migration of lymphocytes to the intestinal mucosa and Peyer's patches. Dimerization with alphaE permits binding to the ligand epithelial cadherin, a calcium-dependent adhesion molecule. Alternate splicing results in multiple transcript variants. Additional alternatively spliced transcript variants of this gene have been described, but their full-length nature is not known. [provided by RefSeq, Sep 2013]

ZNF740 (HGNC:27465): (zinc finger protein 740) Enables sequence-specific double-stranded DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to be located in nucleus. Predicted to be part of chromatin. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.31379873).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ITGB7	NM_000889.3	c.1604C>T	p.Pro535Leu	missense_variant	12/16	ENST00000267082.10
ZNF740	NM_001004304.4	c.*5672G>A		3_prime_UTR_variant	7/7	ENST00000416904.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ITGB7	ENST00000267082.10	c.1604C>T	p.Pro535Leu	missense_variant	12/16	1	NM_000889.3	P1
ZNF740	ENST00000416904.5	c.*5672G>A		3_prime_UTR_variant	7/7	1	NM_001004304.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

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

Dec 11, 2023

The c.1604C>T (p.P535L) alteration is located in exon 12 (coding exon 10) of the ITGB7 gene. This alteration results from a C to T substitution at nucleotide position 1604, causing the proline (P) at amino acid position 535 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	Benign	0.11
BayesDel_addAF	Uncertain	0.087	D
BayesDel_noAF	Benign	-0.11
CADD	Benign	20
DANN	Benign	0.65
DEOGEN2	Benign	0.29	T;T
Eigen	Benign	-0.17
Eigen_PC	Benign	-0.16
FATHMM_MKL	Benign	0.43	N
LIST_S2	Benign	0.77	.;T
M_CAP	Uncertain	0.12	D
MetaRNN	Benign	0.31	T;T
MetaSVM	Uncertain	-0.14	T
MutationAssessor	Benign	0.29	N;N
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.59	T
PROVEAN	Benign	-2.0	N;N
REVEL	Uncertain	0.36
Sift	Benign	0.36	T;T
Sift4G	Benign	0.46	T;T
Polyphen		0.99	D;D
Vest4		0.43
MutPred		0.27		Loss of methylation at K540 (P = 0.065);Loss of methylation at K540 (P = 0.065);
MVP		0.88
MPC		0.34
ClinPred		0.38	T
GERP RS		4.6
Varity_R		0.094
gMVP		0.54

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: chr12-53587046;