11-78016822-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_023930.4(KCTD14):c.539C>T(p.Ala180Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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: 6.8e-7 (0 hom.)
• Consequence: KCTD14 NM_023930.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.17

Genes affected

KCTD14 (HGNC:23295): (potassium channel tetramerization domain containing 14) Predicted to be involved in protein homooligomerization. [provided by Alliance of Genome Resources, Apr 2022]

NDUFC2-KCTD14 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10044426).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KCTD14	NM_023930.4	c.539C>T	p.Ala180Val	missense_variant	2/2	ENST00000353172.6
NDUFC2-KCTD14	NM_001203262.2	c.*449C>T		3_prime_UTR_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KCTD14	ENST00000353172.6	c.539C>T	p.Ala180Val	missense_variant	2/2	1	NM_023930.4	P1
KCTD14	ENST00000533144.1	c.449C>T	p.Ala150Val	missense_variant	3/3	1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461812 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727190

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

ExAC AF: 0.00000824 AC: 1

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

Jul 08, 2022

The c.539C>T (p.A180V) alteration is located in exon 2 (coding exon 2) of the KCTD14 gene. This alteration results from a C to T substitution at nucleotide position 539, causing the alanine (A) at amino acid position 180 to be replaced by a valine (V). 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	0.12
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.48
Cadd	Benign	12
Dann	Uncertain	0.97
DEOGEN2	Benign	0.038	T;.
Eigen	Benign	-0.65
Eigen_PC	Benign	-0.69
FATHMM_MKL	Benign	0.30	N
LIST_S2	Benign	0.45	T;T
M_CAP	Benign	0.017	T
MetaRNN	Benign	0.10	T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	1.3	L;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-1.7	N;N
REVEL	Benign	0.063
Sift	Benign	0.12	T;T
Sift4G	Benign	0.11	T;T
Polyphen		0.14	B;.
Vest4		0.068
MutPred		0.37		Gain of helix (P = 0.0854);.;
MVP		0.73
MPC		0.20
ClinPred		0.13	T
GERP RS		3.6
Varity_R		0.046
gMVP		0.42

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

LitVar

Other links and lift over

dbSNP: rs753380016; hg19: chr11-77727868;