13-101453941-G-C

Position:

• chr13-101453941-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_004791.3(ITGBL1):​c.157G>C​(p.Ala53Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000079 in 1,266,276 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.9e-7 (0 hom.)
• Consequence: ITGBL1 NM_004791.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.08

Genes affected

ITGBL1 (HGNC:6164): (integrin subunit beta like 1) This gene encodes a beta integrin-related protein that is a member of the EGF-like protein family. The encoded protein contains integrin-like cysteine-rich repeats. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ITGBL1	NM_004791.3	c.157G>C	p.Ala53Pro	missense_variant	2/11	ENST00000376180.8
ITGBL1	NM_001271755.2	c.157G>C	p.Ala53Pro	missense_variant	2/10
ITGBL1	NM_001271754.2	c.-108+1010G>C		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ITGBL1	ENST00000376180.8	c.157G>C	p.Ala53Pro	missense_variant	2/11	1	NM_004791.3	P1
ITGBL1	ENST00000618057.4	c.157G>C	p.Ala53Pro	missense_variant	2/10	1
ITGBL1	ENST00000545560.6	c.-108+1010G>C		intron_variant		2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.90e-7 AC: 1 AN: 1266276 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 622046

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: 9.89e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

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

May 09, 2024

The c.157G>C (p.A53P) alteration is located in exon 2 (coding exon 2) of the ITGBL1 gene. This alteration results from a G to C substitution at nucleotide position 157, causing the alanine (A) at amino acid position 53 to be replaced by a proline (P). 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	0.080	D
BayesDel_noAF	Benign	-0.12
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.027	T;T
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.48
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.54	T;T
M_CAP	Pathogenic	0.62	D
MetaRNN	Uncertain	0.51	D;D
MetaSVM	Uncertain	0.13	D
MutationAssessor	Benign	1.1	.;L
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-1.1	.;N
REVEL	Uncertain	0.40
Sift	Benign	0.086	.;T
Sift4G	Benign	0.19	T;T
Polyphen		0.99	.;D
Vest4		0.47
MutPred		0.38		Gain of catalytic residue at P57 (P = 0);Gain of catalytic residue at P57 (P = 0);
MVP		0.73
MPC		0.56
ClinPred		0.92	D
GERP RS		5.4
Varity_R		0.40
gMVP		0.38

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: chr13-102106292;