chr6-109441381-C-G

Variant names:

• chr6-109441381-C-G
• rs1390160022
• NM_003080.3:c.75C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003080.3(SMPD2):​c.75C>G​(p.His25Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,613,986 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: SMPD2 NM_003080.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.657
• Publications: 0 publications found

Genes affected

SMPD2 (HGNC:11121): (sphingomyelin phosphodiesterase 2) This gene encodes a protein which was initially identified as a sphingomyelinase based on sequence similarity between bacterial sphingomyelinases and a yeast protein. Subsequent studies showed that its biological function is less likely to be as a sphingomyelinase and instead as a lysophospholipase. [provided by RefSeq, Oct 2009]

PPIL6 (HGNC:21557): (peptidylprolyl isomerase like 6) Predicted to enable peptidyl-prolyl cis-trans isomerase activity. Predicted to be involved in protein folding and protein peptidyl-prolyl isomerization. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.15357533).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003080.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SMPD2	NM_003080.3	MANE Select	c.75C>G	p.His25Gln	missense	Exon 2 of 10	NP_003071.2	O60906
	PPIL6	NM_001111298.2		c.-791G>C		upstream_gene	N/A	NP_001104768.2	Q8IXY8-2
	PPIL6	NM_001286360.1		c.-791G>C		upstream_gene	N/A	NP_001273289.1	Q8IXY8-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SMPD2	ENST00000258052.8	TSL:1 MANE Select	c.75C>G	p.His25Gln	missense	Exon 2 of 10	ENSP00000258052.3	O60906
	SMPD2	ENST00000882802.1		c.57C>G	p.His19Gln	missense	Exon 2 of 10	ENSP00000552861.1
	SMPD2	ENST00000882801.1		c.75C>G	p.His25Gln	missense	Exon 2 of 9	ENSP00000552860.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152240 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1461746 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 727178

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53396

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.00000540 AC: 6 AN: 1111926

Other (OTH) AF: 0.0000166 AC: 1 AN: 60384

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152240 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74376

African (AFR) AF: 0.00 AC: 0 AN: 41464

American (AMR) AF: 0.00 AC: 0 AN: 15292

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68042

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.10	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	16
DANN	Benign	0.91
DEOGEN2	Benign	0.25	T
Eigen	Benign	-0.41
Eigen_PC	Benign	-0.34
FATHMM_MKL	Benign	0.11	N
LIST_S2	Benign	0.46	T
M_CAP	Benign	0.026	D
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.8	L
PhyloP100		0.66
PrimateAI	Uncertain	0.51	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.13
Sift	Benign	0.39	T
Sift4G	Benign	0.59	T
Polyphen		0.23	B
Vest4		0.086
MutPred		0.63		Gain of MoRF binding (P = 0.1008)
MVP		0.67
MPC		0.089
ClinPred		0.28	T
GERP RS		1.5
PromoterAI		-0.020	Neutral
Varity_R		0.091
gMVP		0.44
Mutation Taster		=80/20	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs1390160022; hg19: chr6-109762584;