19-501900-C-G

Position:

• chr19-501900-C-G

Variant summary

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

The ENST00000215637.8(MADCAM1):​c.899C>G​(p.Pro300Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000717 in 1,394,120 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P300H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: MADCAM1 ENST00000215637.8 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0310

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=0.088134974).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MADCAM1	NM_130760.3	c.899C>G	p.Pro300Arg	missense_variant	4/5	ENST00000215637.8	NP_570116.2
MADCAM1-AS1	XR_936221.4	n.515-276G>C		intron_variant, non_coding_transcript_variant
MADCAM1	NM_130762.3	c.668-2845C>G		intron_variant			NP_570118.1
MADCAM1-AS1	XR_007067073.1	n.515-276G>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MADCAM1	ENST00000215637.8	c.899C>G	p.Pro300Arg	missense_variant	4/5	1	NM_130760.3	ENSP00000215637	P2
MADCAM1-AS1	ENST00000592413.2	n.459-276G>C		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 7.17e-7 AC: 1 AN: 1394120 Hom.: 0 Cov.: 47 AF XY: 0.00 AC XY: 0 AN XY: 688256

Gnomad4 AFR exome AF: 0.0000319

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.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.080
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.60
CADD	Benign	15
DANN	Benign	0.20
DEOGEN2	Benign	0.026	T;.;T;T;T;T;.
Eigen	Benign	-0.85
Eigen_PC	Benign	-1.0
FATHMM_MKL	Benign	0.0061	N
LIST_S2	Benign	0.70	T;T;T;T;T;T;T
M_CAP	Benign	0.0050	T
MetaRNN	Benign	0.088	T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.81	.;.;.;.;.;L;.
MutationTaster	Benign	1.0	P;P;P
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-1.2	.;.;.;.;.;N;.
REVEL	Benign	0.11
Sift	Benign	0.53	.;.;.;.;.;T;.
Sift4G	Uncertain	0.058	T;D;D;D;D;D;D
Polyphen		0.96	.;.;.;.;.;P;.
Vest4		0.22
MutPred		0.29		.;.;.;.;.;Gain of MoRF binding (P = 0.0014);.;
MVP		0.21
MPC		0.70
ClinPred		0.19	T
GERP RS		-0.82
Varity_R		0.020
gMVP		0.30

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

LitVar

Other links and lift over

dbSNP: rs3745925; hg19: chr19-501900;