19-13919829-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_017721.5(CC2D1A):c.1234A>T(p.Ile412Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000207 in 1,451,630 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I412V) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: CC2D1A NM_017721.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.18

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CC2D1A	NM_017721.5	c.1234A>T	p.Ile412Phe	missense_variant	12/29	ENST00000318003.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CC2D1A	ENST00000318003.11	c.1234A>T	p.Ile412Phe	missense_variant	12/29	1	NM_017721.5	P3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000403 AC: 1 AN: 248050 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 134670

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000558

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000207 AC: 3 AN: 1451630 Hom.: 0 Cov.: 30 AF XY: 0.00000278 AC XY: 2 AN XY: 720568

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: 0.0000349

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000828 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.36
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.31
Cadd	Pathogenic	26
Dann	Uncertain	0.98
DEOGEN2	Benign	0.38	T;.
Eigen	Uncertain	0.26
Eigen_PC	Uncertain	0.29
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.97	D;D
M_CAP	Benign	0.027	D
MetaRNN	Benign	0.30	T;T
MetaSVM	Benign	-0.97	T
MutationAssessor	Pathogenic	3.0	M;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.55	T
PROVEAN	Uncertain	-3.0	D;.
REVEL	Benign	0.12
Sift	Uncertain	0.0070	D;.
Sift4G	Uncertain	0.034	D;D
Polyphen		0.82	P;P
Vest4		0.26
MutPred		0.40		Gain of disorder (P = 0.1413);Gain of disorder (P = 0.1413);
MVP		0.52
MPC		0.79
ClinPred		0.92	D
GERP RS		4.9
Varity_R		0.20
gMVP		0.28

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.34		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.34		Position offset: 6

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

Publications

LitVar

Other links and lift over

dbSNP: rs191830054; hg19: chr19-14030642;