12-120766879-C-T

Variant names:

• chr12-120766879-C-T
• rs497273
• NM_139015.5:c.974-507G>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_139015.5(SPPL3):​c.974-507G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000197 in 152,148 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 0.000020 (0 hom., cov: 32)
• Consequence: SPPL3 NM_139015.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0930
• Publications: 16 publications found

Genes affected

SPPL3 (HGNC:30424): (signal peptide peptidase like 3) Enables aspartic endopeptidase activity, intramembrane cleaving and protein homodimerization activity. Involved in several processes, including T cell receptor signaling pathway; positive regulation of calcineurin-NFAT signaling cascade; and positive regulation of protein dephosphorylation. Located in Golgi-associated vesicle membrane; plasma membrane; and rough endoplasmic reticulum. Is integral component of cytoplasmic side of endoplasmic reticulum membrane and integral component of lumenal side of endoplasmic reticulum membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPPL3	NM_139015.5	c.974-507G>A		intron_variant	Intron 9 of 10	ENST00000353487.7	NP_620584.2
SPPL3	XM_011537925.3	c.974-507G>A		intron_variant	Intron 9 of 10		XP_011536227.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPPL3	ENST00000353487.7	c.974-507G>A		intron_variant	Intron 9 of 10	1	NM_139015.5	ENSP00000288680.4
SPPL3	ENST00000545209.1	n.508-507G>A		intron_variant	Intron 2 of 3	1
SPPL3	ENST00000392495.7	n.1550-507G>A		intron_variant	Intron 3 of 4	2

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152030 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152148 Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3 AN XY: 74360

African (AFR) AF: 0.00 AC: 0 AN: 41514

American (AMR) AF: 0.00 AC: 0 AN: 15298

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

East Asian (EAS) AF: 0.000194 AC: 1 AN: 5164

South Asian (SAS) AF: 0.00 AC: 0 AN: 4816

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10562

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68004

Other (OTH) AF: 0.00 AC: 0 AN: 2112

Alfa AF: 0.00 Hom.: 1365

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	3.0
DANN	Benign	0.92
PhyloP100		0.093

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

Other links and lift over

dbSNP: rs497273; hg19: chr12-121204682;