GRIN2C p.Ala33Ala

Variant names:

• chr17-74854993-C-C
• NM_000835.6:c.

Your query was ambiguous. Multiple possible variants found:

• chr17-74854994--
• chr17-74854994-G-A
• chr17-74854994-G-T
• chr17-74854994-G-C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000835.6(GRIN2C):​c. variant causes a exon region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: GRIN2C NM_000835.6 exon_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.419
• Publications: 0 publications found

Genes affected

GRIN2C (HGNC:4587): (glutamate ionotropic receptor NMDA type subunit 2C) This gene encodes a subunit of the N-methyl-D-aspartate (NMDA) receptor, which is a subtype of ionotropic glutamate receptor. NMDA receptors are found in the central nervous system, are permeable to cations and have an important role in physiological processes such as learning, memory, and synaptic development. The receptor is a tetramer of different subunits (typically heterodimer of subunit 1 with one or more of subunits 2A-D), forming a channel that is permeable to calcium, potassium, and sodium, and whose properties are determined by subunit composition. Alterations in the subunit composition of the receptor are associated with pathophysiological conditions such as Parkinson's disease, Alzheimer's disease, depression, and schizophrenia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2013]

GRIN2C Gene-Disease associations (from GenCC):

• Alzheimer disease

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000835.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GRIN2C	NM_000835.6	MANE Select	c.		exon_region	Exon 2 of 13	NP_000826.2	Q14957
	GRIN2C	NM_001278553.2		c.		exon_region	Exon 2 of 12	NP_001265482.1	H0Y2V8
	GRIN2C	NR_103735.2		n.		exon_region	Exon 2 of 13

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GRIN2C	ENST00000293190.10	TSL:1 MANE Select	c.		exon_region	Exon 2 of 13	ENSP00000293190.5	Q14957
	GRIN2C	ENST00000347612.4	TSL:1	c.		exon_region	Exon 2 of 12	ENSP00000338645.4	H0Y2V8
	GRIN2C	ENST00000584496.1	TSL:1	n.		exon_region	Exon 2 of 2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.42

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr17-72851132;