NM_001033855.3:c.985T>A

Variant names:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBS1_SupportingBS2

The NM_001033855.3(DCLRE1C):c.985T>A(p.Leu329Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00116 in 1,613,718 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00068 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0012 ( 2 hom. )

Consequence

DCLRE1C
NM_001033855.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 1.36

Variant links:

Genes affected

DCLRE1C (HGNC:17642): (DNA cross-link repair 1C) This gene encodes a nuclear protein that is involved in V(D)J recombination and DNA repair. The encoded protein has single-strand-specific 5'-3' exonuclease activity; it also exhibits endonuclease activity on 5' and 3' overhangs and hairpins. The protein also functions in the regulation of the cell cycle in response to DNA damage. Mutations in this gene can cause Athabascan-type severe combined immunodeficiency (SCIDA) and Omenn syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

DCLRE1C links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.032343447).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000676 (103/152362) while in subpopulation NFE AF= 0.00121 (82/68030). AF 95% confidence interval is 0.000995. There are 1 homozygotes in gnomad4. There are 49 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DCLRE1C	NM_001033855.3 link	c.985T>A	p.Leu329Met	missense_variant	Exon 12 of 14	ENST00000378278.7	NP_001029027.1	Q96SD1-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DCLRE1C	ENST00000378278.7 link	c.985T>A	p.Leu329Met	missense_variant	Exon 12 of 14	1	NM_001033855.3	ENSP00000367527.2		Q96SD1-1

Frequencies

GnomAD3 genomes

AF:

0.000670

AC:

102

AN:

152244

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000523

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:

0.00119

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000669

AC:

168

AN:

251182

Hom.:

AF XY:

0.000656

AC XY:

AN XY:

135752

show subpopulations

Gnomad AFR exome

AF:

0.0000615

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:

0.0000924

Gnomad NFE exome

AF:

0.00143

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.00121

AC:

1769

AN:

1461356

Hom.:

Cov.:

AF XY:

0.00118

AC XY:

856

AN XY:

727036

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.000134

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.000187

Gnomad4 NFE exome

AF:

0.00153

Gnomad4 OTH exome

AF:

0.000812

GnomAD4 genome

AF:

0.000676

AC:

103

AN:

152362

Hom.:

Cov.:

AF XY:

0.000658

AC XY:

AN XY:

74516

show subpopulations

Gnomad4 AFR

AF:

0.000313

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00121

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000629

Hom.:

Bravo

AF:

0.000657

TwinsUK

AF:

0.00216

AC:

ALSPAC

AF:

0.00156

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000930

AC:

ExAC

AF:

0.000939

AC:

114

EpiCase

AF:

0.00109

EpiControl

AF:

0.00148

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 16, 2023

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: DCLRE1C c.985T>A (p.Leu329Met) results in a conservative amino acid change located in the DNA repair metallo-beta-lactamase domain (IPR011084) of the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00067 in 251182 control chromosomes (gnomAD), predominantly at a frequency of 0.0014 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 2 fold of the estimated maximal expected allele frequency for a pathogenic variant in DCLRE1C causing Severe Combined Immunodeficiency phenotype (0.00071), suggesting that the variant is a benign polymorphism found primarily in populations of Non-Finnish European origin. c.985T>A has been reported in the literature in individuals affected with sporadic common variable immunodeficiency (van Schouwenburg_2015). This report does not provide unequivocal conclusions about association of the variant with Severe Combined Immunodeficiency. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Five ClinVar submitters have assessed the variant since 2014: all five classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as VUS-possibly benign. -

Athabaskan severe combined immunodeficiency

Uncertain:1

Aug 04, 2020

Natera, Inc.

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Histiocytic medullary reticulosis

Uncertain:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

not provided

Uncertain:1

Jun 23, 2021

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Identified in a patient with common variable immunodeficiency in published literature (van Schouwenburg et al., 2015); however a second DCLRE1C variant was not identified; This variant is associated with the following publications: (PMID: 26122175) -

Severe combined immunodeficiency due to DCLRE1C deficiency;C2700553:Histiocytic medullary reticulosis

Uncertain:1

Mar 17, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Severe combined immunodeficiency due to DCLRE1C deficiency

Uncertain:1

Jan 13, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces leucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 329 of the DCLRE1C protein (p.Leu329Met). This variant is present in population databases (rs41299658, gnomAD 0.1%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with common variable immunodeficiency (CVID) (PMID: 26122175). ClinVar contains an entry for this variant (Variation ID: 299316). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt DCLRE1C protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.24

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.12

.;.;.;.;.;.;.;T;.

Eigen

Uncertain

0.51

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.83

T;.;.;T;.;.;.;T;T

M_CAP

Benign

0.025

MetaRNN

Benign

0.032

T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.62

MutationAssessor

Pathogenic

2.9

M;.;.;.;.;.;.;M;.

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-1.2

N;N;N;N;N;N;N;N;N

REVEL

Benign

0.18

Sift

Uncertain

0.0070

D;D;D;D;D;D;D;D;D

Sift4G

Uncertain

0.015

D;D;D;D;.;.;.;D;.

Polyphen

0.99

D;D;D;D;.;.;.;D;.

Vest4

0.43

MVP

0.37

MPC

0.30

ClinPred

0.19

GERP RS

4.3

Varity_R

0.40

gMVP

0.53

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

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