rs121908950

chr10-87743589-C-A

Variant summary

Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PVS1 PM2 PP3 PP5_Moderate

The NM_001015880.2(PAPSS2):c.1439C>A(p.Ser480Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,854 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PAPSS2 NM_001015880.2 stop_gained
• Clinical Significance: Pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 1.94

Genes affected

PAPSS2 (HGNC:8604): (3'-phosphoadenosine 5'-phosphosulfate synthase 2) Sulfation is a common modification of endogenous (lipids, proteins, and carbohydrates) and exogenous (xenobiotics and drugs) compounds. In mammals, the sulfate source is 3'-phosphoadenosine 5'-phosphosulfate (PAPS), created from ATP and inorganic sulfate. Two different tissue isoforms encoded by different genes synthesize PAPS. This gene encodes one of the two PAPS synthetases. Defects in this gene cause the Pakistani type of spondyloepimetaphyseal dysplasia. Two alternatively spliced transcript variants that encode different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Pathogenic. Variant got 13 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
• PP5: Variant 10-87743589-C-A is Pathogenic according to our data. Variant chr10-87743589-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 6686.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PAPSS2	NM_001015880.2	c.1439C>A	p.Ser480Ter	stop_gained	11/13	ENST00000456849.2
PAPSS2	NM_004670.4	c.1424C>A	p.Ser475Ter	stop_gained	10/12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PAPSS2	ENST00000456849.2	c.1439C>A	p.Ser480Ter	stop_gained	11/13	1	NM_001015880.2	A1
PAPSS2	ENST00000361175.8	c.1424C>A	p.Ser475Ter	stop_gained	10/12	1		P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461854 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 727234

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: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

Spondyloepimetaphyseal dysplasia, PAPSS2 type Pathogenic:2

Pathogenic, no assertion criteria provided	literature only	OMIM	Oct 01, 1998	- -
Pathogenic, criteria provided, single submitter	clinical testing	Invitae	Dec 13, 2022	This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Ser480*) in the PAPSS2 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in PAPSS2 are known to be pathogenic (PMID: 22791835, 23633440). This premature translational stop signal has been observed in individual(s) with PAPSS2-related conditions (PMID: 9771708, 25594860). For these reasons, this variant has been classified as Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. ClinVar contains an entry for this variant (Variation ID: 6686). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.63
Cadd	Pathogenic	48
Dann	Uncertain	1.0
Eigen	Pathogenic	0.75
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Uncertain	0.84	D
MutationTaster	Benign	1.0	A;A;A
Vest4		0.92
GERP RS		5.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.54		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.54		Position offset: -3

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

Publications

LitVar

Other links and lift over

dbSNP: rs121908950; hg19: chr10-89503346;