rs150739647

Positions:

Variant summary

Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM1PM2PM5PP3_ModeratePP5_Very_Strong

The NM_000448.3(RAG1):c.2924G>A(p.Arg975Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000452 in 1,613,964 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R975W) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000046 ( 0 hom. )

Consequence

RAG1
NM_000448.3 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:5O:1

Conservation

PhyloP100: 9.52

Variant links:

Genes affected

RAG1 (HGNC:9831): (recombination activating 1) The protein encoded by this gene is involved in activation of immunoglobulin V-D-J recombination. The encoded protein is involved in recognition of the DNA substrate, but stable binding and cleavage activity also requires RAG2. Defects in this gene can be the cause of several diseases. [provided by RefSeq, Jul 2008]

RAG1 links:

RAG2 (HGNC:9832): (recombination activating 2) This gene encodes a protein that is involved in the initiation of V(D)J recombination during B and T cell development. This protein forms a complex with the product of the adjacent recombination activating gene 1, and this complex can form double-strand breaks by cleaving DNA at conserved recombination signal sequences. The recombination activating gene 1 component is thought to contain most of the catalytic activity, while the N-terminal of the recombination activating gene 2 component is thought to form a six-bladed propeller in the active core that serves as a binding scaffold for the tight association of the complex with DNA. A C-terminal plant homeodomain finger-like motif in this protein is necessary for interactions with chromatin components, specifically with histone H3 that is trimethylated at lysine 4. Mutations in this gene cause Omenn syndrome, a form of severe combined immunodeficiency associated with autoimmune-like symptoms. [provided by RefSeq, Jul 2008]

RAG2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 16 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 2 uncertain in NM_000448.3

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr11-36576227-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 13159.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.877

PP5

Variant 11-36576228-G-A is Pathogenic according to our data. Variant chr11-36576228-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 68693.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-36576228-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAG1	NM_000448.3 linkuse as main transcript	c.2924G>A	p.Arg975Gln	missense_variant	2/2	ENST00000299440.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAG1	ENST00000299440.6 linkuse as main transcript	c.2924G>A	p.Arg975Gln	missense_variant	2/2	1	NM_000448.3	P1	P15918-1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000439

AC:

AN:

250554

Hom.:

AF XY:

0.0000443

AC XY:

AN XY:

135518

show subpopulations

Gnomad AFR exome

AF:

0.0000619

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:

0.000139

Gnomad NFE exome

AF:

0.0000619

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000458

AC:

AN:

1461822

Hom.:

Cov.:

AF XY:

0.0000371

AC XY:

AN XY:

727210

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.000131

Gnomad4 NFE exome

AF:

0.0000522

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74328

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.0000655

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:

0.00

Alfa

AF:

0.0000685

Hom.:

Bravo

AF:

0.0000416

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:5Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:2Other:1

not provided, no classification provided	literature only	UniProtKB/Swiss-Prot	-	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Sep 07, 2021	- -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Dec 09, 2020	Has been published previously either with a second RAG1 variant or in the homozygous state in patients with RAG1-associated disorders (Villa et al., 2001; Avila et al., 2010; Yu et al., 2016; Meshaal et al, 2019); Published functional studies demonstrate a damaging effect with impaired recombination activity (Wong et al., 2008); In silico analysis supports that this missense variant does not alter protein structure/function; Published functional studies demonstrate a damaging effect with impaired recombination activity Lee 2014); This variant is associated with the following publications: (PMID: 28783144, 18768869, 24290284, 11971977, 11133745, 20956421, 30307608, 27484032) -

Severe combined immunodeficiency disease

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

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

Aug 31, 2018

Variant summary: RAG1 c.2924G>A (p.Arg975Gln) results in a conservative amino acid change located in the C-terminal part of the catalytic core domain (Lee 2014) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4e-05 in 276306 control chromosomes (gnomAD). This frequency is lower than expected for a pathogenic variant in RAG1 causing Severe Combined Immunodeficiency Syndrome/Omenn Syndrome (4e-05 vs 0.00071), allowing no conclusion about variant significance. c.2924G>A has been described in the literature in compound heterozygosity in individuals affected with Severe Combined Immunodeficiency Syndrome (SCID) or Omenn Syndrome (Villa 2001, Avila 2010, Yu 2016) and it was also reported in an internal sample from a compound heterozygous child affected with Omenn syndrome (OS). The variant was also found in homozygous form in a patient with OS (Meshaal 2015). These data indicate that the variant is very likely to be associated with disease. At least two publications reported experimental evidence evaluating an impact on protein function (Wong 2008, Lee 2014). The most pronounced variant effect resulted in ~60% of normal recombination activity (Lee 2014). A ClinVar submission from another clinical diagnostic laboratory (evaluation after 2014) cites the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -

Severe combined immunodeficiency, autosomal recessive, T cell-negative, B cell-negative, NK cell-positive;C2673536:Combined immunodeficiency with skin granulomas

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Oct 28, 2023

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 975 of the RAG1 protein (p.Arg975Gln). This variant is present in population databases (rs150739647, gnomAD 0.01%). This missense change has been observed in individual(s) with severe combined immunodeficiency or Omenn syndrome (PMID: 11133745, 27484032, 30307608). ClinVar contains an entry for this variant (Variation ID: 68693). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt RAG1 protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects RAG1 function (PMID: 17476359, 18768869, 24290284). For these reasons, this variant has been classified as Pathogenic. -

Combined immunodeficiency due to partial RAG1 deficiency

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Feb 07, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.35

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.69

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.84

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.88

MetaSVM

Uncertain

0.26

MutationAssessor

Uncertain

2.3

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

-1.3

REVEL

Pathogenic

0.76

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.98

MVP

0.96

MPC

0.74

ClinPred

0.35

GERP RS

5.6

Varity_R

0.60

gMVP

0.83

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