VCV002087156.7 - ClinVar

NM_000536.4(RAG2):c.303T>A (p.Asn101Lys)

Germline

Classification

criteria provided, multiple submitters, no conflicts. Learn more about how ClinVar calculates review status.

Likely pathogenic
Likely pathogenic (2)

2 out of 2 submissions contributed to this classification

The aggregate germline classification for this variant, typically for a monogenic or Mendelian disorder as in the ACMG/AMP guidelines, or for response to a drug. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the aggregate classification.

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_000536.4(RAG2):c.303T>A (p.Asn101Lys)

Variation ID: 2087156 Accession: VCV002087156.7

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 11p12 11: 36593866 (GRCh38) [ NCBI UCSC ] 11: 36615416 (GRCh37) [ NCBI UCSC ]

Timeline in ClinVar

	First in ClinVar Help The date this variant first appeared in ClinVar with each type of classification.	Last submission Help The date of the most recent submission for each type of classification for this variant.	Last evaluated Help The most recent date that a submitter evaluated this variant for each type of classification.
Germline	Feb 8, 2023	Feb 23, 2026	Oct 24, 2025

HGVS

Nucleotide	Protein	Molecular consequence
NM_000536.4:c.303T>A MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_000527.2:p.Asn101Lys	missense
NM_001243785.2:c.303T>A	NP_001230714.1:p.Asn101Lys	missense
NM_001243786.2:c.303T>A	NP_001230715.1:p.Asn101Lys	missense
NC_000011.10:g.36593866A>T
NC_000011.9:g.36615416A>T
NG_007573.1:g.9371T>A
NG_033154.1:g.4374A>T
LRG_99:g.9371T>A
LRG_99t1:c.303T>A	LRG_99p1:p.Asn101Lys

... more HGVS ... less HGVS

Protein change

N101K

Other names

Canonical SPDI

NC_000011.10:36593865:A:T

Global minor allele frequency (GMAF) Help The global minor allele frequency calculated by the 1000 Genomes Project. The minor allele at this location is indicated in parentheses and may be different from the allele represented by this VCV record.

Allele frequency Help The frequency of the allele represented by this VCV record.

The Genome Aggregation Database (gnomAD), exomes 0.00000

Links

ClinGen: CA380143718 dbSNP: rs2133315445 VarSome

Genes

Gene	OMIM	ClinGen Gene Dosage Sensitivity Curation		Variation Viewer Help Links to Variation Viewer, a genome browser to view variation data from NCBI databases.	Related variants
Gene	OMIM	HI score Help The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.	TS score Help The triplosensitivity score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.		Within gene Help The number of variants in ClinVar that are contained within this gene, with a link to view the list of variants.	All Help The number of variants in ClinVar for this gene, including smaller variants within the gene and larger CNVs that overlap or fully contain the gene.
RAG2		Gene associated with autosomal recessive phenotype	Not yet evaluated	GRCh38 GRCh37	623	658

Conditions - Germline

Condition Help The condition for this variant-condition (RCV) record in ClinVar.	Classification Help The aggregate germline classification for this variant-condition (RCV) record in ClinVar. The number of submissions that contribute to this aggregate classification is shown in parentheses. (# of submissions)	Review status Help The aggregate review status for this variant-condition (RCV) record in ClinVar. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status.	Last evaluated Help The most recent date that a submitter evaluated this variant for the condition.	Variation/condition record Help The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page.
Combined immunodeficiency with skin granulomas Severe combined immunodeficiency, autosomal recessive, T cell-negative, B cell-negative, NK cell-positive	Likely pathogenic (1)	criteria provided, single submitter	Jan 17, 2022	RCV003017779.5
Severe combined immunodeficiency disease	Likely pathogenic (1)	criteria provided, single submitter	Oct 24, 2025	RCV006454313.1

Submissions - Germline

Classification Help The submitted germline classification for each SCV record. (Last evaluated)	Review status Help Stars represent the review status, or the level of review supporting the submitted (SCV) record. This value is calculated by NCBI based on data from the submitter. Read our rules for calculating the review status. This column also includes a link to the submitter’s assertion criteria if provided, and the collection method. (Assertion criteria)	Condition Help The condition for the classification, provided by the submitter for this submitted (SCV) record. This column also includes the affected status and allele origin of individuals observed with this variant.	Submitter Help The submitting organization for this submitted (SCV) record. This column also includes the SCV accession and version number, the date this SCV first appeared in ClinVar, and the date that this SCV was last updated in ClinVar.	Expand all rows Collapse all rows Help This column includes more information supporting the classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter.
Likely pathogenic (Jan 17, 2022) C Contributing to aggregate classification	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Combined immunodeficiency with skin granulomas Severe combined immunodeficiency, autosomal recessive, T cell-negative, B cell-negative, NK cell-positive Explanation for multiple conditions: Uncertain. The variant was classified for several related diseases, possibly a spectrum of disease; the variant may be associated with one or more the diseases.	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV003304554.4 First in ClinVar: Feb 07, 2023 Last updated: Feb 23, 2026	Publications: PubMed (1) PubMed: 33628209 Comment: show In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. 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"). This missense change has been observed in individual(s) with severe combined immunodeficiency (PMID: 33628209; Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 101 of the RAG2 protein (p.Asn101Lys). (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: germline Affected status: unknown

Likely pathogenic (Oct 24, 2025) C Contributing to aggregate classification	criteria provided, single submitter (LabCorp Variant Classification Summary - May 2015)	Severe combined immunodeficiency disease	Women's Health and Genetics/Laboratory Corporation of America, LabCorp Accession: SCV005203425.3 First in ClinVar: Sep 16, 2024 Last updated: Feb 01, 2026	Publications: PubMed (1) PubMed: 33628209 Comment: show Variant summary: RAG2 c.303T>A (p.Asn101Lys) results in a non-conservative amino acid change in the encoded protein sequence. Algorithms developed to predict the effect of missense changes on protein structure and function all suggest that this variant is likely to be disruptive. The variant was absent in 251442 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.303T>A has been observed in one individual affected with features of Severe Combined Immunodeficiency (Vignesh_2021, internal data). These data suggests that this variant may be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication have been ascertained in the context of this evaluation (PMID: 33628209). ClinVar contains an entry for this variant (Variation ID: 2087156). Based on the evidence outlined above, the variant was classified as likely pathogenic. (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: germline Affected status: unknown

Comment:

In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. 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"). This missense change has been observed in individual(s) with severe combined immunodeficiency (PMID: 33628209; Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 101 of the RAG2 protein (p.Asn101Lys).

Comment:

Variant summary: RAG2 c.303T>A (p.Asn101Lys) results in a non-conservative amino acid change in the encoded protein sequence. Algorithms developed to predict the effect of missense changes on protein structure and function all suggest that this variant is likely to be disruptive. The variant was absent in 251442 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.303T>A has been observed in one individual affected with features of Severe Combined Immunodeficiency (Vignesh_2021, internal data). These data suggests that this variant may be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication have been ascertained in the context of this evaluation (PMID: 33628209). ClinVar contains an entry for this variant (Variation ID: 2087156). Based on the evidence outlined above, the variant was classified as likely pathogenic.

Citations for germline classification of this variant

Title	Author	Journal	Year	Link
Clinical, Immunological, and Molecular Features of Severe Combined Immune Deficiency: A Multi-Institutional Experience From India.	Vignesh P	Frontiers in immunology	2021	PMID: 33628209

Text-mined citations for rs2133315445 ...

These citations are identified by LitVar using the rs number, so they may include citations for more than one variant at this location. Please review the LitVar results carefully for your variant of interest.

Record last updated Apr 13, 2026