rs230656

Positions:

• chr11-78179683-A-C
• chr11-78179683-A-G
• chr11-78179683-A-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001029859.3(KCTD21):​c.-29-5100T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000791 in 151,654 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.000079 (0 hom., cov: 31)
• Consequence: KCTD21 NM_001029859.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.843

Genes affected

KCTD21 (HGNC:27452): (potassium channel tetramerization domain containing 21) Enables cullin family protein binding activity; histone deacetylase binding activity; and identical protein binding activity. Involved in negative regulation of smoothened signaling pathway and ubiquitin-dependent protein catabolic process. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KCTD21	NM_001029859.3	c.-29-5100T>G		intron_variant		ENST00000340067.4
KCTD21	XM_006718517.3	c.-276-1698T>G		intron_variant
KCTD21	XM_006718518.4	c.-29-5100T>G		intron_variant
KCTD21	XM_047426803.1	c.-855-1698T>G		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KCTD21	ENST00000340067.4	c.-29-5100T>G		intron_variant		1	NM_001029859.3	P1

Frequencies

GnomAD3 genomes AF: 0.0000791 AC: 12 AN: 151654 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000761

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000589

Gnomad OTH AF: 0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0000791 AC: 12 AN: 151654 Hom.: 0 Cov.: 31 AF XY: 0.000135 AC XY: 10 AN XY: 74046

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000761

Gnomad4 NFE AF: 0.0000589

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	0.26
DANN	Benign	0.50

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: rs230656; hg19: chr11-77890729;