chr1-205339206-C-A

Variant names:

• chr1-205339206-C-A
• NM_018203.3:c.745G>T

Variant summary

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

The NM_018203.3(KLHDC8A):​c.745G>T​(p.Asp249Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,678 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. D249N) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: KLHDC8A NM_018203.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.89

Genes affected

KLHDC8A (HGNC:25573): (kelch domain containing 8A) This gene encodes a kelch domain-containing protein which is upregulated in cancer. Upregulated expression of the encoded protein may provide an alternative pathway for tumors to maintain aggressiveness in the absence of epidermal growth factor receptor dependence. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2012]

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, 0.898

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KLHDC8A	NM_018203.3	c.745G>T	p.Asp249Tyr	missense_variant	Exon 4 of 6	ENST00000367155.8	NP_060673.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KLHDC8A	ENST00000367155.8	c.745G>T	p.Asp249Tyr	missense_variant	Exon 4 of 6	2	NM_018203.3	ENSP00000356123.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461678 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727160

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.53
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.37	T;T;T;.;.
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.76
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.91	D;.;.;D;D
M_CAP	Uncertain	0.26	D
MetaRNN	Pathogenic	0.90	D;D;D;D;D
MetaSVM	Uncertain	0.34	D
MutationAssessor	Uncertain	2.2	M;M;M;.;.
PrimateAI	Uncertain	0.71	T
PROVEAN	Pathogenic	-7.1	D;D;D;.;.
REVEL	Pathogenic	0.84
Sift	Uncertain	0.0010	D;D;D;.;.
Sift4G	Uncertain	0.0040	D;D;D;D;.
Polyphen		1.0	D;D;D;.;.
Vest4		0.96
MutPred		0.62		Gain of phosphorylation at D249 (P = 0.0206);Gain of phosphorylation at D249 (P = 0.0206);Gain of phosphorylation at D249 (P = 0.0206);.;.;
MVP		0.95
MPC		1.4
ClinPred		1.0	D
GERP RS		5.4
Varity_R		0.91
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: chr1-205308334;