chr11-36573390-A-G

Position:

• chr11-36573390-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PM2_Supporting

This summary comes from the ClinGen Evidence Repository: The NM_000448.3:c.86A>G variant in RAG1 is a missense variant predicted to cause a substitution of lysine by arginine at amino acid 29 (p.Lys29Arg). The Popmax filtering allele frequency of this variant in gnomAD v2.1.1 is 0.00000702, which is lower than the SCID-VCEP’s threshold for PM2 (<0.000102). No homozygous individual has been observed in the gnomAD v2.1.1 (PM2_Supporting). This variant has not been reported in the literature in individuals with SCID. In ClinVar, the variant was reported in two affected individuals who didn't have a second RAG1 variant, and the variant was classified as a Variant of Uncertain Significance (Invitae, SCV003292718.1). There is no functional evidence for this variant. Due to insufficient evidence, this variant is classified as a variant of uncertain significance for SCID. ACMG/AMP criteria applied, as specified by the ClinGen SCID-VCEP: PM2_supporting (SCID VCEP specifications version 1.0). LINK:https://erepo.genome.network/evrepo/ui/classification/CA5949900/MONDO:0000572/123

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: RAG1 NM_000448.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.93

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAG1	NM_000448.3	c.86A>G	p.Lys29Arg	missense_variant	2/2	ENST00000299440.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAG1	ENST00000299440.6	c.86A>G	p.Lys29Arg	missense_variant	2/2	1	NM_000448.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000119 AC: 3 AN: 251182 Hom.: 0 AF XY: 0.0000147 AC XY: 2 AN XY: 135788

Gnomad AFR exome AF: 0.00

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: 0.00

Gnomad NFE exome AF: 0.0000264

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461892 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

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: 0.00

Gnomad4 NFE exome AF: 0.00000450

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Severe combined immunodeficiency, autosomal recessive, T cell-negative, B cell-negative, NK cell-positive;C2673536:Combined immunodeficiency with skin granulomas Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jul 25, 2022

This sequence change replaces lysine, which is basic and polar, with arginine, which is basic and polar, at codon 29 of the RAG1 protein (p.Lys29Arg). This variant is present in population databases (rs756679254, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with RAG1-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). 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	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.010
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.28	T
Eigen	Pathogenic	0.87
Eigen_PC	Pathogenic	0.87
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	D
M_CAP	Uncertain	0.094	D
MetaRNN	Uncertain	0.54	D
MetaSVM	Uncertain	0.31	D
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.57	T
PROVEAN	Benign	-0.17	N
REVEL	Uncertain	0.37
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.011	D
Polyphen		1.0	D
Vest4		0.55
MutPred		0.34		Loss of methylation at K29 (P = 0.004);
MVP		0.96
MPC		0.63
ClinPred		0.83	D
GERP RS		6.1
Varity_R		0.49
gMVP		0.52

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

Other links and lift over

dbSNP: rs756679254; hg19: chr11-36594940;