chr17-46066559-C-A

Position:

• chr17-46066559-C-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2 BP4_Moderate BS1

The NM_015443.4(KANSL1):​c.1826G>T​(p.Ser609Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,990 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 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: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: KANSL1 NM_015443.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.225

Genes affected

KANSL1 (HGNC:24565): (KAT8 regulatory NSL complex subunit 1) This gene encodes a nuclear protein that is a subunit of two protein complexes involved with histone acetylation, the MLL1 complex and the NSL1 complex. The encoded protein has been implicated in a variety of cellular processes including enhancer regulation, cell proliferation, and mitosis. Mutations in this gene are associated with Koolen-de Vries Syndrome. [provided by RefSeq, May 2022]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2410908).
• BS1: Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.00000137 (2/1460990) while in subpopulation MID AF= 0.000357 (2/5606). AF 95% confidence interval is 0.0000626. There are 0 homozygotes in gnomad4_exome. There are 2 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KANSL1	NM_015443.4	c.1826G>T	p.Ser609Ile	missense_variant	6/15	ENST00000432791.7	NP_056258.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KANSL1	ENST00000432791.7	c.1826G>T	p.Ser609Ile	missense_variant	6/15	1	NM_015443.4	ENSP00000387393.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1460990 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 726752

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.058	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	23
DANN	Uncertain	0.99
Eigen	Benign	0.047
Eigen_PC	Benign	0.12
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.68	.;.;.;.;T;T;T;T;T;T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.24	T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
PrimateAI	Uncertain	0.53	T
PROVEAN	Uncertain	-3.1	D;.;.;.;.;D;.;.;.;.
REVEL	Benign	0.12
Sift	Uncertain	0.020	D;.;.;.;.;D;.;.;.;.
Sift4G	Benign	0.15	T;T;T;.;T;T;.;.;.;.
Vest4		0.29
MutPred		0.32		Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);Gain of sheet (P = 0.0101);.;Gain of sheet (P = 0.0101);
MVP		0.50
MPC		0.95
ClinPred		0.90	D
GERP RS		4.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
gMVP		0.41

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: rs138698439; hg19: chr17-44143925;