NM_152499.4:c.305A>G

Variant names:

• chr1-43992525-A-G
• NM_152499.4:c.305A>G

Variant summary

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

The NM_152499.4(CCDC24):​c.305A>G​(p.Asp102Gly) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CCDC24 NM_152499.4 missense, splice_region
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.15

Genes affected

CCDC24 (HGNC:28688): (coiled-coil domain containing 24) Predicted to act upstream of or within blastocyst hatching. [provided by Alliance of Genome Resources, Apr 2022]

SLC6A9 (HGNC:11056): (solute carrier family 6 member 9) The amino acid glycine acts as an inhibitory neurotransmitter in the central nervous system. The protein encoded by this gene is one of two transporters that stop glycine signaling by removing it from the synaptic cleft. [provided by RefSeq, Jun 2016]

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 rank	MANE	Protein	UniProt
CCDC24	NM_152499.4	c.305A>G	p.Asp102Gly	missense_variant, splice_region_variant	Exon 4 of 9	ENST00000372318.8	NP_689712.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC24	ENST00000372318.8	c.305A>G	p.Asp102Gly	missense_variant, splice_region_variant	Exon 4 of 9	1	NM_152499.4	ENSP00000361392.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Apr 06, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.305A>G (p.D102G) alteration is located in exon 4 (coding exon 3) of the CCDC24 gene. This alteration results from a A to G substitution at nucleotide position 305, causing the aspartic acid (D) at amino acid position 102 to be replaced by a glycine (G). 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	Uncertain	0.39
BayesDel_addAF	Uncertain	0.039	T
BayesDel_noAF	Benign	-0.18
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.22	T
Eigen	Uncertain	0.50
Eigen_PC	Uncertain	0.45
FATHMM_MKL	Benign	0.67	D
LIST_S2	Benign	0.67	T
M_CAP	Uncertain	0.11	D
MetaRNN	Uncertain	0.74	D
MetaSVM	Uncertain	-0.25	T
MutationAssessor	Uncertain	2.7	M
PrimateAI	Uncertain	0.50	T
PROVEAN	Pathogenic	-4.6	D
REVEL	Uncertain	0.34
Sift	Uncertain	0.023	D
Sift4G	Uncertain	0.034	D
Polyphen		1.0	D
Vest4		0.71
MutPred		0.43		Loss of helix (P = 0.0072);
MVP		0.17
MPC		0.17
ClinPred		1.0	D
GERP RS		4.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.5
Varity_R		0.49
gMVP		0.49

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.12		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: chr1-44458197;