chr7-95592767-G-T

Position:

• chr7-95592767-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_002612.4(PDK4):​c.522C>A​(p.Asn174Lys) variant causes a missense change involving the alteration of a non-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 Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PDK4 NM_002612.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.44

Genes affected

PDK4 (HGNC:8812): (pyruvate dehydrogenase kinase 4) This gene is a member of the PDK/BCKDK protein kinase family and encodes a mitochondrial protein with a histidine kinase domain. This protein is located in the matrix of the mitrochondria and inhibits the pyruvate dehydrogenase complex by phosphorylating one of its subunits, thereby contributing to the regulation of glucose metabolism. Expression of this gene is regulated by glucocorticoids, retinoic acid and insulin. [provided by RefSeq, Jul 2008]

PDK4-AS1 (HGNC:55767): (PDK4 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.917

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PDK4	NM_002612.4	c.522C>A	p.Asn174Lys	missense_variant	4/11	ENST00000005178.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PDK4	ENST00000005178.6	c.522C>A	p.Asn174Lys	missense_variant	4/11	1	NM_002612.4	P1
PDK4-AS1	ENST00000665332.1	n.37-20284G>T		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

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

Feb 15, 2023

The c.522C>A (p.N174K) alteration is located in exon 4 (coding exon 4) of the PDK4 gene. This alteration results from a C to A substitution at nucleotide position 522, causing the asparagine (N) at amino acid position 174 to be replaced by a lysine (K). 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	Pathogenic	0.97
BayesDel_addAF	Benign	-0.071	T
BayesDel_noAF	Benign	-0.34
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.46	T
Eigen	Uncertain	0.46
Eigen_PC	Uncertain	0.36
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Benign	0.027	D
MetaRNN	Pathogenic	0.92	D
MetaSVM	Benign	-0.71	T
MutationAssessor	Pathogenic	3.3	M
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-5.4	D
REVEL	Uncertain	0.30
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.031	D
Polyphen		0.96	D
Vest4		0.92
MutPred		0.76		Gain of MoRF binding (P = 0.0314);
MVP		0.65
MPC		0.51
ClinPred		0.99	D
GERP RS		1.9
Varity_R		0.89
gMVP		0.84

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: chr7-95222079;