19-498591-A-T

Variant names:

• chr19-498591-A-T
• NM_130760.3:c.433A>T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_130760.3(MADCAM1):​c.433A>T​(p.Asn145Tyr) 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. 13/21 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: 31)
• Consequence: MADCAM1 NM_130760.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.272

Genes affected

MADCAM1 (HGNC:6765): (mucosal vascular addressin cell adhesion molecule 1) The protein encoded by this gene is an endothelial cell adhesion molecule that interacts preferentially with the leukocyte beta7 integrin LPAM-1 (alpha4beta7), L-selectin, and VLA-4 (alpha4beta1) on myeloid cells to direct leukocytes into mucosal and inflamed tissues. It is a member of the immunoglobulin family and is similar to ICAM1 and VCAM1. At least seven alternatively spliced transcripts encoding different protein isoforms have been found for this gene, but the full-length nature of some variants has not been determined. [provided by RefSeq, Jul 2008]

MADCAM1-AS1 (HGNC:55315): (MADCAM1 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.15165392).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MADCAM1	NM_130760.3	c.433A>T	p.Asn145Tyr	missense_variant	Exon 3 of 5	ENST00000215637.8	NP_570116.2
MADCAM1	NM_130762.3	c.433A>T	p.Asn145Tyr	missense_variant	Exon 3 of 4		NP_570118.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MADCAM1	ENST00000215637.8	c.433A>T	p.Asn145Tyr	missense_variant	Exon 3 of 5	1	NM_130760.3	ENSP00000215637.2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 58

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Mar 07, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.433A>T (p.N145Y) alteration is located in exon 3 (coding exon 3) of the MADCAM1 gene. This alteration results from a A to T substitution at nucleotide position 433, causing the asparagine (N) at amino acid position 145 to be replaced by a tyrosine (Y). 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	0.22
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.61
CADD	Benign	13
DANN	Uncertain	0.99
DEOGEN2	Benign	0.030	.;T;T;T;.;T;.;.
Eigen	Benign	-0.91
Eigen_PC	Benign	-1.0
FATHMM_MKL	Benign	0.034	N
LIST_S2	Benign	0.78	T;T;T;T;T;T;T;T
M_CAP	Benign	0.017	T
MetaRNN	Benign	0.15	T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.2	.;.;.;.;L;L;.;.
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-1.8	.;.;.;.;N;D;D;.
REVEL	Benign	0.10
Sift	Benign	0.057	.;.;.;.;T;T;D;.
Sift4G	Uncertain	0.021	D;D;D;D;D;D;D;D
Polyphen		0.95	.;.;.;.;.;P;.;.
Vest4		0.26
MutPred		0.51		Gain of phosphorylation at N145 (P = 0.0441);Gain of phosphorylation at N145 (P = 0.0441);Gain of phosphorylation at N145 (P = 0.0441);Gain of phosphorylation at N145 (P = 0.0441);Gain of phosphorylation at N145 (P = 0.0441);Gain of phosphorylation at N145 (P = 0.0441);.;Gain of phosphorylation at N145 (P = 0.0441);
MVP		0.15
MPC		0.80
ClinPred		0.29	T
GERP RS		1.6
Varity_R		0.12
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: chr19-498591;