rs118203895

Variant names:

• chr12-21642032-C-A
• NM_002300.8:c.515G>T

Your query was ambiguous. Multiple possible variants found:

• chr12-21642032-C-A
• chr12-21642032-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PM5 PP3_Moderate

The NM_002300.8(LDHB):​c.515G>T​(p.Arg172Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,382 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. R172P) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: LDHB NM_002300.8 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.04

Genes affected

LDHB (HGNC:6541): (lactate dehydrogenase B) This gene encodes the B subunit of lactate dehydrogenase enzyme, which catalyzes the interconversion of pyruvate and lactate with concomitant interconversion of NADH and NAD+ in a post-glycolysis process. Alternatively spliced transcript variants have been found for this gene. Recent studies have shown that a C-terminally extended isoform is produced by use of an alternative in-frame translation termination codon via a stop codon readthrough mechanism, and that this isoform is localized in the peroxisomes. Mutations in this gene are associated with lactate dehydrogenase B deficiency. Pseudogenes have been identified on chromosomes X, 5 and 13. [provided by RefSeq, Feb 2016]

ENSG00000285854 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.909

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LDHB	NM_002300.8	c.515G>T	p.Arg172Leu	missense_variant	Exon 5 of 8	ENST00000350669.5	NP_002291.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LDHB	ENST00000350669.5	c.515G>T	p.Arg172Leu	missense_variant	Exon 5 of 8	1	NM_002300.8	ENSP00000229319.1
ENSG00000285854	ENST00000647960.1	n.515G>T		non_coding_transcript_exon_variant	Exon 5 of 23			ENSP00000497202.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461382 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 726980

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: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.36	D
BayesDel_noAF	Pathogenic	0.28
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.78	D;D;.
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.91
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.88	.;D;D
M_CAP	Uncertain	0.12	D
MetaRNN	Pathogenic	0.91	D;D;D
MetaSVM	Uncertain	0.71	D
MutationAssessor	Pathogenic	4.4	H;H;.
PrimateAI	Uncertain	0.79	T
PROVEAN	Pathogenic	-5.8	D;D;D
REVEL	Pathogenic	0.68
Sift	Pathogenic	0.0	D;D;D
Sift4G	Uncertain	0.0030	D;D;.
Polyphen		0.98	D;D;.
Vest4		0.94
MutPred		0.76		Gain of catalytic residue at S168 (P = 0);Gain of catalytic residue at S168 (P = 0);Gain of catalytic residue at S168 (P = 0);
MVP		0.93
MPC		0.37
ClinPred		1.0	D
GERP RS		5.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.86
gMVP		0.86

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: chr12-21794966;