NM_001321571.2:c.947C>T

Variant names:

• chr4-113509675-G-A
• NM_001321571.2:c.947C>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP2 PP3

The NM_001321571.2(CAMK2D):​c.947C>T​(p.Ala316Val) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,453,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: CAMK2D NM_001321571.2 missense, splice_region
• Scores: Splicing: ADA: 0.9964
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.32
• Publications: 0 publications found

Genes affected

CAMK2D (HGNC:1462): (calcium/calmodulin dependent protein kinase II delta) The product of this gene belongs to the serine/threonine protein kinase family and to the Ca(2+)/calmodulin-dependent protein kinase subfamily. Calcium signaling is crucial for several aspects of plasticity at glutamatergic synapses. In mammalian cells, the enzyme is composed of four different chains: alpha, beta, gamma, and delta. The product of this gene is a delta chain. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Distinct isoforms of this chain have different expression patterns.[provided by RefSeq, Nov 2008]

CAMK2D Gene-Disease associations (from GenCC):

• CAMK2D-related neurodevelopmental disorder and dilated cardiomyopathy

  Inheritance: AD Classification: MODERATE Submitted by: G2P
• complex neurodevelopmental disorder

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics

ENSG00000308709 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 7 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: 3.1055 (above the threshold of 3.09). Trascript score misZ: 1.1706 (below the threshold of 3.09). GenCC associations: The gene is linked to complex neurodevelopmental disorder, CAMK2D-related neurodevelopmental disorder and dilated cardiomyopathy.
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CAMK2D	NM_001321571.2	c.947C>T	p.Ala316Val	missense_variant, splice_region_variant	Exon 13 of 21	ENST00000511664.6	NP_001308500.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CAMK2D	ENST00000511664.6	c.947C>T	p.Ala316Val	missense_variant, splice_region_variant	Exon 13 of 21	2	NM_001321571.2	ENSP00000425824.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1453870 Hom.: 0 Cov.: 27 AF XY: 0.00 AC XY: 0 AN XY: 723740

African (AFR) AF: 0.00 AC: 0 AN: 33320

American (AMR) AF: 0.0000224 AC: 1 AN: 44692

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26080

East Asian (EAS) AF: 0.00 AC: 0 AN: 39634

South Asian (SAS) AF: 0.00 AC: 0 AN: 86104

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53394

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5744

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1104746

Other (OTH) AF: 0.00 AC: 0 AN: 60156

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Mar 26, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.947C>T (p.A316V) alteration is located in exon 13 (coding exon 13) of the CAMK2D gene. This alteration results from a C to T substitution at nucleotide position 947, causing the alanine (A) at amino acid position 316 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Uncertain	0.025	T
BayesDel_noAF	Benign	-0.20
CADD	Pathogenic	33
DANN	Uncertain	0.99
DEOGEN2	Benign	0.023	.;.;T;T;.;.;T;.;.
Eigen	Benign	0.068
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.86	D;D;D;D;D;T;D;.;D
M_CAP	Benign	0.032	D
MetaRNN	Benign	0.25	T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	0.34	N;N;.;N;N;N;.;N;N
PhyloP100		9.3
PrimateAI	Pathogenic	0.86	D
PROVEAN	Benign	-1.3	N;N;N;N;N;N;N;N;N
REVEL	Benign	0.18
Sift	Benign	0.24	T;T;T;T;T;T;T;T;T
Sift4G	Benign	0.29	T;T;T;T;T;T;T;T;T
Polyphen		0.0010	B;.;B;B;B;.;.;.;.
Vest4		0.37
MutPred		0.28		Gain of glycosylation at S319 (P = 0.0631);Gain of glycosylation at S319 (P = 0.0631);Gain of glycosylation at S319 (P = 0.0631);Gain of glycosylation at S319 (P = 0.0631);Gain of glycosylation at S319 (P = 0.0631);Gain of glycosylation at S319 (P = 0.0631);Gain of glycosylation at S319 (P = 0.0631);Gain of glycosylation at S319 (P = 0.0631);Gain of glycosylation at S319 (P = 0.0631);
MVP		0.53
MPC		0.31
ClinPred		0.82	D
GERP RS		6.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.11
gMVP		0.50
Mutation Taster		=6/94	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.85
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

Other links and lift over

hg19: chr4-114430831;