chr19-13906496-C-A

Variant names:

• chr19-13906496-C-A
• NM_017721.5:c.55C>A

Variant summary

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

The NM_017721.5(CC2D1A):​c.55C>A​(p.Arg19Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000149 in 1,340,140 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000015 (0 hom.)
• Consequence: CC2D1A NM_017721.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.01

Genes affected

CC2D1A (HGNC:30237): (coiled-coil and C2 domain containing 1A) This gene encodes a transcriptional repressor that binds to a conserved 14-bp 5'-repressor element and regulates expression of the 5-hydroxytryptamine (serotonin) receptor 1A gene in neuronal cells. The DNA binding and transcriptional repressor activities of the protein are inhibited by calcium. A mutation in this gene results in a nonsyndromic form of cognitive disability (MRT3). [provided by RefSeq, Jul 2017]

BRME1 (HGNC:28153): (break repair meiotic recombinase recruitment factor 1) Predicted to be involved in meiosis I and spermatogenesis. Predicted to be located in chromosome. [provided by Alliance of Genome Resources, Apr 2022]

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=0.3022155).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CC2D1A	NM_017721.5	c.55C>A	p.Arg19Ser	missense_variant	Exon 1 of 29	ENST00000318003.11	NP_060191.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CC2D1A	ENST00000318003.11	c.55C>A	p.Arg19Ser	missense_variant	Exon 1 of 29	1	NM_017721.5	ENSP00000313601.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000149 AC: 2 AN: 1340140 Hom.: 0 Cov.: 30 AF XY: 0.00000151 AC XY: 1 AN XY: 660436

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: 0.0000268

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.78
BayesDel_addAF	Benign	-0.10	T
BayesDel_noAF	Benign	-0.39
CADD	Pathogenic	30
DANN	Uncertain	1.0
DEOGEN2	Benign	0.041	T;.
Eigen	Benign	0.16
Eigen_PC	Benign	0.15
FATHMM_MKL	Benign	0.38	N
LIST_S2	Uncertain	0.89	D;D
M_CAP	Uncertain	0.11	D
MetaRNN	Benign	0.30	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.97	L;L
PrimateAI	Uncertain	0.70	T
PROVEAN	Benign	-1.5	N;.
REVEL	Benign	0.16
Sift	Benign	0.078	T;.
Sift4G	Uncertain	0.0050	D;D
Polyphen		0.99	D;D
Vest4		0.29
MutPred		0.36		Loss of methylation at R19 (P = 0.0355);Loss of methylation at R19 (P = 0.0355);
MVP		0.50
MPC		0.60
ClinPred		0.87	D
GERP RS		2.9
Varity_R		0.20
gMVP		0.51

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-14017309;