rs751571336

Variant names:

• chr18-63350953-C-G
• NM_002035.4:c.544G>C

Your query was ambiguous. Multiple possible variants found:

• chr18-63350953-C-G
• chr18-63350953-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PM5 PP3_Strong

The NM_002035.4(KDSR):​c.544G>C​(p.Gly182Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,830 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G182S) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: KDSR NM_002035.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.91

Genes affected

KDSR (HGNC:4021): (3-ketodihydrosphingosine reductase) The protein encoded by this gene catalyzes the reduction of 3-ketodihydrosphingosine to dihydrosphingosine. The putative active site residues of the encoded protein are found on the cytosolic side of the endoplasmic reticulum membrane. A chromosomal rearrangement involving this gene is a cause of follicular lymphoma, also known as type II chronic lymphatic leukemia. The mutation of a conserved residue in the bovine ortholog causes spinal muscular atrophy. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr18-63350953-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2572585.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.972

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KDSR	NM_002035.4	c.544G>C	p.Gly182Arg	missense_variant	Exon 6 of 10	ENST00000645214.2	NP_002026.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KDSR	ENST00000645214.2	c.544G>C	p.Gly182Arg	missense_variant	Exon 6 of 10		NM_002035.4	ENSP00000494352.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461830 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727218

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.48	D
BayesDel_noAF	Pathogenic	0.45
CADD	Pathogenic	26
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.84	D;D;.
Eigen	Pathogenic	0.74
Eigen_PC	Pathogenic	0.66
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	.;D;D
M_CAP	Uncertain	0.18	D
MetaRNN	Pathogenic	0.97	D;D;D
MetaSVM	Pathogenic	0.84	D
MutationAssessor	Uncertain	2.8	M;M;.
PrimateAI	Pathogenic	0.90	D
PROVEAN	Pathogenic	-7.6	.;D;.
REVEL	Pathogenic	0.86
Sift	Pathogenic	0.0	.;D;.
Sift4G	Pathogenic	0.0	.;D;.
Polyphen		1.0	D;D;.
Vest4		0.99
MutPred		0.81		Gain of MoRF binding (P = 0.0093);Gain of MoRF binding (P = 0.0093);Gain of MoRF binding (P = 0.0093);
MVP		0.96
MPC		1.1
ClinPred		1.0	D
GERP RS		6.0
Varity_R		0.85
gMVP		0.95

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr18-61018186;