chr11-18456763-C-A

Position:

• chr11-18456763-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_144972.5(LDHAL6A):​c.83C>A​(p.Thr28Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,668 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: LDHAL6A NM_144972.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.447

Genes affected

LDHAL6A (HGNC:28335): (lactate dehydrogenase A like 6A) Predicted to enable L-lactate dehydrogenase activity. Predicted to be involved in carbohydrate metabolic process and carboxylic acid metabolic process. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LDHAL6A	NM_144972.5	c.83C>A	p.Thr28Asn	missense_variant	1/7	ENST00000280706.3	NP_659409.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LDHAL6A	ENST00000280706.3	c.83C>A	p.Thr28Asn	missense_variant	1/7	2	NM_144972.5	ENSP00000280706	P1
LDHAL6A	ENST00000396213.7	c.83C>A	p.Thr28Asn	missense_variant	2/8	1		ENSP00000379516	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461668 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727140

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: 0.00000360

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 31, 2023

The c.83C>A (p.T28N) alteration is located in exon 1 (coding exon 1) of the LDHAL6A gene. This alteration results from a C to A substitution at nucleotide position 83, causing the threonine (T) at amino acid position 28 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.31
BayesDel_addAF	Benign	-0.079	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	15
DANN	Benign	0.89
DEOGEN2	Uncertain	0.68	.;D;D
Eigen	Benign	-0.91
Eigen_PC	Benign	-1.0
FATHMM_MKL	Benign	0.44	N
LIST_S2	Uncertain	0.95	D;.;D
M_CAP	Uncertain	0.099	D
MetaRNN	Uncertain	0.45	T;T;T
MetaSVM	Uncertain	-0.12	T
MutationAssessor	Benign	1.8	.;L;L
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.29	T
PROVEAN	Uncertain	-2.8	.;D;D
REVEL	Uncertain	0.33
Sift	Uncertain	0.0010	.;D;D
Sift4G	Uncertain	0.023	D;D;D
Polyphen		0.17	.;B;B
Vest4		0.32
MutPred		0.69		Loss of glycosylation at S24 (P = 0.2044);Loss of glycosylation at S24 (P = 0.2044);Loss of glycosylation at S24 (P = 0.2044);
MVP		0.70
MPC		0.18
ClinPred		0.86	D
GERP RS		-4.1
Varity_R		0.38
gMVP		0.42

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

LitVar

Other links and lift over

dbSNP: rs1270110425; hg19: chr11-18478310;