10-133183920-C-G

Variant names:

• chr10-133183920-C-G
• rs913604987
• NM_152643.8:c.556C>G

Variant summary

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

The NM_152643.8(KNDC1):​c.556C>G​(p.Arg186Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000207 in 1,452,016 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: KNDC1 NM_152643.8 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.924

Genes affected

KNDC1 (HGNC:29374): (kinase non-catalytic C-lobe domain containing 1) The protein encoded by this gene is a Ras guanine nucleotide exchange factor that appears to negatively regulate dendritic growth in the brain. Knockdown of this gene in senescent umbilical vein endothelial cells partially reversed the senescence, showing that this gene could potentially be targeted by anti-aging therapies. [provided by RefSeq, Dec 2016]

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=0.21286285).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KNDC1	NM_152643.8	c.556C>G	p.Arg186Gly	missense_variant	Exon 5 of 30	ENST00000304613.8	NP_689856.6
KNDC1	XM_017016858.3	c.556C>G	p.Arg186Gly	missense_variant	Exon 5 of 27		XP_016872347.1
KNDC1	XM_017016859.3	c.556C>G	p.Arg186Gly	missense_variant	Exon 5 of 21		XP_016872348.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KNDC1	ENST00000304613.8	c.556C>G	p.Arg186Gly	missense_variant	Exon 5 of 30	1	NM_152643.8	ENSP00000304437.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000207 AC: 3 AN: 1452016 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 720650

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: 0.00000272

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
CADD	Benign	19
DANN	Uncertain	0.98
DEOGEN2	Benign	0.14	T;.
Eigen	Benign	-0.11
Eigen_PC	Benign	-0.14
FATHMM_MKL	Benign	0.52	D
LIST_S2	Benign	0.76	T;T
M_CAP	Benign	0.0089	T
MetaRNN	Benign	0.21	T;T
MetaSVM	Benign	-1.1	T
PrimateAI	Benign	0.29	T
PROVEAN	Uncertain	-3.8	D;D
REVEL	Benign	0.064
Sift	Uncertain	0.028	D;D
Sift4G	Benign	0.23	T;T
Polyphen		0.49	P;D
Vest4		0.46
MutPred		0.36		Gain of helix (P = 0.0082);.;
MVP		0.25
MPC		0.75
ClinPred		0.91	D
GERP RS		2.0
Varity_R		0.30
gMVP		0.21

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: rs913604987; hg19: chr10-134997424;