rs142996967

Positions:

• chr17-75843090-C-G
• chr17-75843090-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_199242.3(UNC13D):​c.262-17G>C variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000215 in 139,474 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: 𝑓 0.000022 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000081 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: UNC13D NM_199242.3 splice_polypyrimidine_tract, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.39

Genes affected

UNC13D (HGNC:23147): (unc-13 homolog D) This gene encodes a protein that is a member of the UNC13 family, containing similar domain structure as other family members but lacking an N-terminal phorbol ester-binding C1 domain present in other Munc13 proteins. The protein appears to play a role in vesicle maturation during exocytosis and is involved in regulation of cytolytic granules secretion. Mutations in this gene are associated with familial hemophagocytic lymphohistiocytosis type 3, a genetically heterogeneous, rare autosomal recessive disorder. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
UNC13D	NM_199242.3	c.262-17G>C		splice_polypyrimidine_tract_variant, intron_variant		ENST00000207549.9	NP_954712.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
UNC13D	ENST00000207549.9	c.262-17G>C		splice_polypyrimidine_tract_variant, intron_variant		1	NM_199242.3	ENSP00000207549	P1

Frequencies

GnomAD3 genomes AF: 0.0000215 AC: 3 AN: 139342 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000255

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000316

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000808 AC: 43 AN: 532118 Hom.: 0 Cov.: 26 AF XY: 0.0000797 AC XY: 23 AN XY: 288600

Gnomad4 AFR exome AF: 0.0000591

Gnomad4 AMR exome AF: 0.0000265

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000808

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000112

Gnomad4 OTH exome AF: 0.000167

GnomAD4 genome AF: 0.0000215 AC: 3 AN: 139474 Hom.: 0 Cov.: 32 AF XY: 0.0000296 AC XY: 2 AN XY: 67594

Gnomad4 AFR AF: 0.0000254

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000316

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	0.42
DANN	Benign	0.49

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

LitVar

Other links and lift over

dbSNP: rs142996967; hg19: chr17-73839171;