Variant chr3-187220242-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001879.6(MASP1):c.1929G>A(p.Ala643=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00257 in 1,614,100 control chromosomes in the GnomAD database, including 28 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0076 ( 15 hom., cov: 32)

Exomes 𝑓: 0.0020 ( 13 hom. )

Consequence

MASP1
NM_001879.6 synonymous

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -3.53

Variant links:

Genes affected

MASP1 (HGNC:6901): (MBL associated serine protease 1) This gene encodes a serine protease that functions as a component of the lectin pathway of complement activation. The complement pathway plays an essential role in the innate and adaptive immune response. The encoded protein is synthesized as a zymogen and is activated when it complexes with the pathogen recognition molecules of lectin pathway, the mannose-binding lectin and the ficolins. This protein is not directly involved in complement activation but may play a role as an amplifier of complement activation by cleaving complement C2 or by activating another complement serine protease, MASP-2. The encoded protein is also able to cleave fibrinogen and factor XIII and may may be involved in coagulation. A splice variant of this gene which lacks the serine protease domain functions as an inhibitor of the complement pathway. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Apr 2010]

MASP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.65).

BP6

Variant 3-187220242-C-T is Benign according to our data. Variant chr3-187220242-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 1209113.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-3.53 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0076 (1158/152274) while in subpopulation AFR AF= 0.0221 (916/41542). AF 95% confidence interval is 0.0209. There are 15 homozygotes in gnomad4. There are 542 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 15 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MASP1	NM_001879.6 linkuse as main transcript	c.1929G>A	p.Ala643=	synonymous_variant	16/16	ENST00000337774.10	NP_001870.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MASP1	ENST00000337774.10 linkuse as main transcript	c.1929G>A	p.Ala643=	synonymous_variant	16/16	1	NM_001879.6	ENSP00000336792	P1	P48740-1

Frequencies

GnomAD3 genomes

AF:

0.00756

AC:

1150

AN:

152156

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0219

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00543

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00103

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00209

Gnomad OTH

AF:

0.00478

GnomAD3 exomes

AF:

0.00292

AC:

727

AN:

249116

Hom.:

AF XY:

0.00266

AC XY:

359

AN XY:

134846

show subpopulations

Gnomad AFR exome

AF:

0.0207

Gnomad AMR exome

AF:

0.00313

Gnomad ASJ exome

AF:

0.000695

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00127

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00197

Gnomad OTH exome

AF:

0.00278

GnomAD4 exome

AF:

0.00204

AC:

2987

AN:

1461826

Hom.:

Cov.:

AF XY:

0.00197

AC XY:

1429

AN XY:

727212

show subpopulations

Gnomad4 AFR exome

AF:

0.0218

Gnomad4 AMR exome

AF:

0.00315

Gnomad4 ASJ exome

AF:

0.000574

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00130

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00154

Gnomad4 OTH exome

AF:

0.00353

GnomAD4 genome

AF:

0.00760

AC:

1158

AN:

152274

Hom.:

Cov.:

AF XY:

0.00728

AC XY:

542

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.0221

Gnomad4 AMR

AF:

0.00542

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00104

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00209

Gnomad4 OTH

AF:

0.00473

Alfa

AF:

0.00449

Hom.:

Bravo

AF:

0.00813

Asia WGS

AF:

0.00375

AC:

AN:

3478

EpiCase

AF:

0.00322

EpiControl

AF:

0.00267

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Dec 24, 2018	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.65

CADD

Benign

1.8

DANN

Benign

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over