chr10-26746333-A-C

Position:

• chr10-26746333-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3 PP5

The NM_014317.5(PDSS1):​c.1108A>C​(p.Ser370Arg) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PDSS1 NM_014317.5 missense, splice_region
• Scores: Splicing: ADA: 0.0007158
• Clinical Significance: Pathogenic no assertion criteria provided P:1 O:1
• Conservation: PhyloP100: 9.10

Genes affected

PDSS1 (HGNC:17759): (decaprenyl diphosphate synthase subunit 1) The protein encoded by this gene is an enzyme that elongates the prenyl side-chain of coenzyme Q, or ubiquinone, one of the key elements in the respiratory chain. The gene product catalyzes the formation of all trans-polyprenyl pyrophosphates from isopentyl diphosphate in the assembly of polyisoprenoid side chains, the first step in coenzyme Q biosynthesis. The protein may be peripherally associated with the inner mitochondrial membrane, though no transit peptide has been definitively identified to date. Defects in this gene are a cause of coenzyme Q10 deficiency. [provided by RefSeq, Jul 2008]

PDSS1 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.84
• PP5: Variant 10-26746333-A-C is Pathogenic according to our data. Variant chr10-26746333-A-C is described in ClinVar as [Pathogenic]. Clinvar id is 375348.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PDSS1	NM_014317.5	c.1108A>C	p.Ser370Arg	missense_variant, splice_region_variant	12/12	ENST00000376215.10	NP_055132.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PDSS1	ENST00000376215.10	c.1108A>C	p.Ser370Arg	missense_variant, splice_region_variant	12/12	1	NM_014317.5	ENSP00000365388.5
PDSS1	ENST00000470978.1	n.350A>C		splice_region_variant, non_coding_transcript_exon_variant	5/5	2
PDSS1	ENST00000491711.5	n.*213A>C		splice_region_variant, non_coding_transcript_exon_variant	8/8	5		ENSP00000435695.1
PDSS1	ENST00000491711.5	n.*213A>C		3_prime_UTR_variant	8/8	5		ENSP00000435695.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1 Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Deafness-encephaloneuropathy-obesity-valvulopathy syndrome Pathogenic:1 Other:1

not provided, no classification provided	literature only	GeneReviews	-	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Apr 18, 2023	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.32	D
BayesDel_noAF	Pathogenic	0.21
CADD	Pathogenic	28
DANN	Benign	0.92
DEOGEN2	Uncertain	0.61	D
Eigen	Pathogenic	0.84
Eigen_PC	Pathogenic	0.76
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.10	D
MetaRNN	Pathogenic	0.84	D
MetaSVM	Uncertain	-0.19	T
PrimateAI	Uncertain	0.70	T
PROVEAN	Uncertain	-4.2	D
REVEL	Uncertain	0.60
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.83
MutPred		0.60		Gain of MoRF binding (P = 0.0689);
MVP		0.82
MPC		1.4
ClinPred		1.0	D
GERP RS		4.6
Varity_R		0.83
gMVP		0.85

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.00072
dbscSNV1_RF	Benign	0.022
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: rs1057519354; hg19: chr10-27035262;