rs2227973

Positions:

• chr11-36575763-A-C
• chr11-36575763-A-G
• chr11-36575763-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000448.3(RAG1):​c.2459A>C​(p.Lys820Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K820R) has been classified as Benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: RAG1 NM_000448.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.86

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]

RAG2 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.4035981).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RAG1	NM_000448.3	c.2459A>C	p.Lys820Thr	missense_variant	2/2	ENST00000299440.6	NP_000439.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RAG1	ENST00000299440.6	c.2459A>C	p.Lys820Thr	missense_variant	2/2	1	NM_000448.3	ENSP00000299440.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.070
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.87	D
Eigen	Benign	-0.074
Eigen_PC	Benign	-0.048
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.92	D
M_CAP	Benign	0.081	D
MetaRNN	Benign	0.40	T
MetaSVM	Uncertain	0.082	D
MutationAssessor	Uncertain	2.8	M
PrimateAI	Benign	0.39	T
PROVEAN	Uncertain	-2.7	D
REVEL	Uncertain	0.48
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0050	D
Polyphen		0.078	B
Vest4		0.38
MutPred		0.27		Loss of methylation at K820 (P = 4e-04);
MVP		0.93
MPC		0.29
ClinPred		0.93	D
GERP RS		2.6
Varity_R		0.34
gMVP		0.61

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

Other links and lift over

dbSNP: rs2227973; hg19: chr11-36597313;