2-172558729-A-C

Position:

• chr2-172558729-A-C

Variant summary

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

The NM_002610.5(PDK1):​c.218A>C​(p.Lys73Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000000687 in 1,455,556 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: PDK1 NM_002610.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.87

Genes affected

PDK1 (HGNC:8809): (pyruvate dehydrogenase kinase 1) Pyruvate dehydrogenase (PDH) is a mitochondrial multienzyme complex that catalyzes the oxidative decarboxylation of pyruvate and is one of the major enzymes responsible for the regulation of homeostasis of carbohydrate fuels in mammals. The enzymatic activity is regulated by a phosphorylation/dephosphorylation cycle. Phosphorylation of PDH by a specific pyruvate dehydrogenase kinase (PDK) results in inactivation. Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jun 2013]

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	UniProt
PDK1	NM_002610.5	c.218A>C	p.Lys73Thr	missense_variant	2/11	ENST00000282077.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PDK1	ENST00000282077.8	c.218A>C	p.Lys73Thr	missense_variant	2/11	1	NM_002610.5	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1455556 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 724220

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: 9.01e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

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

Jun 29, 2022

The c.218A>C (p.K73T) alteration is located in exon 2 (coding exon 2) of the PDK1 gene. This alteration results from a A to C substitution at nucleotide position 218, causing the lysine (K) at amino acid position 73 to be replaced by a threonine (T). 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	Uncertain	0.55
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.050
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.49	T;.;T;T
Eigen	Uncertain	0.20
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.91	D
M_CAP	Benign	0.023	T
MetaRNN	Uncertain	0.44	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.0	M;M;M;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Pathogenic	0.90	D
PROVEAN	Uncertain	-3.4	D;D;D;D
REVEL	Benign	0.14
Sift	Benign	0.094	T;T;T;T
Sift4G	Benign	0.086	T;T;T;T
Polyphen		0.26	B;.;B;.
Vest4		0.70
MutPred		0.55		Loss of ubiquitination at K73 (P = 0.0074);Loss of ubiquitination at K73 (P = 0.0074);Loss of ubiquitination at K73 (P = 0.0074);.;
MVP		0.37
MPC		1.2
ClinPred		0.97	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.67
gMVP		0.59

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: chr2-173423457;