chr3-187253197-C-T

Position:

chr3-187253197-C-T

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_139125.4(MASP1):c.863G>A(p.Arg288Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000265 in 1,614,108 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0011 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 2 hom. )

Consequence

MASP1
NM_139125.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:5

Conservation

PhyloP100: 1.89

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:

MASP1 (HGNC:):

MASP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.014130175).

BP6

Variant 3-187253197-C-T is Benign according to our data. Variant chr3-187253197-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 285534.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=1, Benign=1}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00108 (164/152262) while in subpopulation AFR AF= 0.00352 (146/41534). AF 95% confidence interval is 0.00305. There are 1 homozygotes in gnomad4. There are 71 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MASP1	NM_139125.4 linkuse as main transcript	c.863G>A	p.Arg288Gln	missense_variant	6/11	ENST00000296280.11	NP_624302.1	P48740-2
MASP1	NM_001879.6 linkuse as main transcript	c.863G>A	p.Arg288Gln	missense_variant	6/16	ENST00000337774.10	NP_001870.3	P48740-1
MASP1	NM_001031849.3 linkuse as main transcript	c.863G>A	p.Arg288Gln	missense_variant	6/9		NP_001027019.1	P48740-3
MASP1	NR_033519.2 linkuse as main transcript	n.736G>A		non_coding_transcript_exon_variant	5/10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MASP1	ENST00000296280.11 linkuse as main transcript	c.863G>A	p.Arg288Gln	missense_variant	6/11	1	NM_139125.4	ENSP00000296280.7		P48740-2
MASP1	ENST00000337774.10 linkuse as main transcript	c.863G>A	p.Arg288Gln	missense_variant	6/16	1	NM_001879.6	ENSP00000336792.5		P48740-1

Frequencies

GnomAD3 genomes

AF:

0.00107

AC:

163

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00348

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000916

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000278

AC:

AN:

251426

Hom.:

AF XY:

0.000155

AC XY:

AN XY:

135886

show subpopulations

Gnomad AFR exome

AF:

0.00326

Gnomad AMR exome

AF:

0.000347

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000180

AC:

263

AN:

1461846

Hom.:

Cov.:

AF XY:

0.000158

AC XY:

115

AN XY:

727224

show subpopulations

Gnomad4 AFR exome

AF:

0.00460

Gnomad4 AMR exome

AF:

0.000470

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000696

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000468

Gnomad4 OTH exome

AF:

0.000265

GnomAD4 genome

AF:

0.00108

AC:

164

AN:

152262

Hom.:

Cov.:

AF XY:

0.000954

AC XY:

AN XY:

74436

show subpopulations

Gnomad4 AFR

AF:

0.00352

Gnomad4 AMR

AF:

0.000915

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000692

Hom.:

Bravo

AF:

0.00130

ESP6500AA

AF:

0.00386

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000412

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

3MC syndrome 1

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Sep 23, 2016	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jun 21, 2023	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Jan 19, 2016

- -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 15, 2021

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

MASP1-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 25, 2023

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Dec 02, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.62

BayesDel_noAF

Benign

-0.66

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.059

T;.;.;.;T

Eigen

Benign

-0.49

Eigen_PC

Benign

-0.33

FATHMM_MKL

Benign

0.55

LIST_S2

Uncertain

0.89

D;D;D;D;D

M_CAP

Benign

0.0035

MetaRNN

Benign

0.014

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.70

N;N;.;N;.

PrimateAI

Benign

0.32

PROVEAN

Benign

-0.91

N;N;N;N;N

REVEL

Benign

0.021

Sift

Benign

0.45

T;T;T;T;T

Sift4G

Benign

0.57

T;T;T;T;T

Polyphen

0.026

B;B;B;B;B

Vest4

0.087

MVP

0.22

MPC

0.14

ClinPred

0.0097

GERP RS

2.0

Varity_R

0.14

gMVP

0.36

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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