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GeneBe

5-52865029-G-C

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_181501.2(ITGA1):c.443G>C(p.Cys148Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000108 in 1,613,742 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

ITGA1
NM_181501.2 missense

Scores

11
6
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.55
Variant links:
Genes affected
ITGA1 (HGNC:6134): (integrin subunit alpha 1) This gene encodes the alpha 1 subunit of integrin receptors. This protein heterodimerizes with the beta 1 subunit to form a cell-surface receptor for collagen and laminin. The heterodimeric receptor is involved in cell-cell adhesion and may play a role in inflammation and fibrosis. The alpha 1 subunit contains an inserted (I) von Willebrand factor type I domain which is thought to be involved in collagen binding. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.944

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ITGA1NM_181501.2 linkuse as main transcriptc.443G>C p.Cys148Ser missense_variant 5/29 ENST00000282588.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ITGA1ENST00000282588.7 linkuse as main transcriptc.443G>C p.Cys148Ser missense_variant 5/291 NM_181501.2 P1
ENST00000652796.1 linkuse as main transcriptn.503+3644C>G intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes
AF:
0.0000329
AC:
5
AN:
152122
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000735
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000319
AC:
8
AN:
251086
Hom.:
0
AF XY:
0.0000369
AC XY:
5
AN XY:
135674
show subpopulations
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:
0.0000705
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000116
AC:
169
AN:
1461620
Hom.:
0
Cov.:
30
AF XY:
0.000111
AC XY:
81
AN XY:
727112
show subpopulations
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:
0.000151
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
AF:
0.0000329
AC:
5
AN:
152122
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74316
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000735
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000676
Hom.:
0
Bravo
AF:
0.0000302
ExAC
AF:
0.0000165
AC:
2
EpiCase
AF:
0.0000545
EpiControl
AF:
0.0000593

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsMay 17, 2023The c.443G>C (p.C148S) alteration is located in exon 5 (coding exon 5) of the ITGA1 gene. This alteration results from a G to C substitution at nucleotide position 443, causing the cysteine (C) at amino acid position 148 to be replaced by a serine (S). 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
Pathogenic
1.0
BayesDel_addAF
Pathogenic
0.28
D
BayesDel_noAF
Pathogenic
0.36
Cadd
Pathogenic
30
Dann
Uncertain
0.99
DEOGEN2
Uncertain
0.79
D
Eigen
Pathogenic
0.98
Eigen_PC
Pathogenic
0.95
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Benign
0.85
T
M_CAP
Uncertain
0.087
D
MetaRNN
Pathogenic
0.94
D
MetaSVM
Uncertain
0.25
D
MutationAssessor
Pathogenic
3.7
H
MutationTaster
Benign
1.0
D
PrimateAI
Uncertain
0.76
T
PROVEAN
Pathogenic
-9.7
D
REVEL
Pathogenic
0.75
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.91
MutPred
0.64
Gain of disorder (P = 1e-04);
MVP
0.91
MPC
0.33
ClinPred
1.0
D
GERP RS
5.8
Varity_R
0.97
gMVP
0.94

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.070
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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs200986699; hg19: chr5-52160863; COSMIC: COSV99252139; API