NM_017951.5:c.2401A>T

Variant names:

• chr2-130152638-T-A
• NM_017951.5:c.2401A>T

Variant summary

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

The NM_017951.5(SMPD4):​c.2401A>T​(p.Thr801Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000711 in 1,407,366 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/19 in silico tools predict 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: 33)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: SMPD4 NM_017951.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.547

Genes affected

SMPD4 (HGNC:32949): (sphingomyelin phosphodiesterase 4) The protein encoded by this gene is a sphingomyelinase that catalyzes the hydrolysis of membrane sphingomyelin to form phosphorylcholine and ceramide. This gene is activated by DNA damage, cellular stress, and tumor necrosis factor, but it is downregulated by wild-type p53. The encoded protein localizes to the endoplasmic reticulum and Golgi network. [provided by RefSeq, Mar 2017]

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 (MetaRNN=0.055888325).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SMPD4	NM_017951.5	c.2401A>T	p.Thr801Ser	missense_variant	Exon 20 of 20	ENST00000680298.1	NP_060421.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SMPD4	ENST00000680298.1	c.2401A>T	p.Thr801Ser	missense_variant	Exon 20 of 20		NM_017951.5	ENSP00000506463.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.11e-7 AC: 1 AN: 1407366 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 695098

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.22e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	0.024
DANN	Benign	0.86
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.33	N
LIST_S2	Benign	0.45	T;T;T
M_CAP	Benign	0.0081	T
MetaRNN	Benign	0.056	T;T;T
MetaSVM	Benign	-1.0	T
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-1.5	N;N;N
REVEL	Benign	0.042
Sift	Benign	0.43	T;T;T
Sift4G	Benign	0.29	T;T;T
Vest4		0.037
MVP		0.13
MPC		0.73
ClinPred		0.054	T
GERP RS		-7.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.023
gMVP		0.21

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: chr2-130910211;