1-235342645-A-G

Position:

• chr1-235342645-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PS1_Moderate PM1 PM2 PP3_Moderate PP5

The NM_004837.4(GGPS1):​c.776A>G​(p.Tyr259Cys) variant causes a missense 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. Variant has been reported in ClinVar as Pathogenic (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely pathogenicin UniProt.

• Frequency: Genomes: not found (cov: 33)
• Consequence: GGPS1 NM_004837.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 9.29

Genes affected

GGPS1 (HGNC:4249): (geranylgeranyl diphosphate synthase 1) This gene is a member of the prenyltransferase family and encodes a protein with geranylgeranyl diphosphate (GGPP) synthase activity. The enzyme catalyzes the synthesis of GGPP from farnesyl diphosphate and isopentenyl diphosphate. GGPP is an important molecule responsible for the C20-prenylation of proteins and for the regulation of a nuclear hormone receptor. Alternate transcriptional splice variants, both protein-coding and non-protein-coding, have been found for this gene. [provided by RefSeq, Sep 2010]

ACMG classification

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

• PS1: Transcript NM_004837.4 (GGPS1) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in UniProt
• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_004837.4
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.862
• PP5: Variant 1-235342645-A-G is Pathogenic according to our data. Variant chr1-235342645-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 1232302.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr1-235342645-A-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GGPS1	NM_004837.4	c.776A>G	p.Tyr259Cys	missense_variant	4/4	ENST00000282841.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GGPS1	ENST00000282841.9	c.776A>G	p.Tyr259Cys	missense_variant	4/4	1	NM_004837.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Muscular dystrophy, congenital hearing loss, and ovarian insufficiency syndrome Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Sep 08, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.76
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.63	D;D;D;.
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	0.99
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	.;D;.;D
M_CAP	Uncertain	0.090	D
MetaRNN	Pathogenic	0.86	D;D;D;D
MetaSVM	Uncertain	0.44	D
MutationAssessor	Pathogenic	3.2	M;M;M;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.76	T
PROVEAN	Pathogenic	-8.2	D;D;D;D
REVEL	Pathogenic	0.65
Sift	Uncertain	0.0010	D;D;D;D
Sift4G	Pathogenic	0.0010	D;D;D;D
Polyphen		1.0	D;D;D;.
Vest4		0.87
MutPred		0.66		Loss of phosphorylation at Y259 (P = 0.1177);Loss of phosphorylation at Y259 (P = 0.1177);Loss of phosphorylation at Y259 (P = 0.1177);.;
MVP		0.53
MPC		1.4
ClinPred		1.0	D
GERP RS		6.2
Varity_R		0.88
gMVP		0.78

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: chr1-235505960;