17-46066712-T-C

Variant names:

• chr17-46066712-T-C
• rs551923672
• NM_015443.4:c.1673A>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_015443.4(KANSL1):​c.1673A>G​(p.Asp558Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,660 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D558V) has been classified as Likely benign.

• 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: 3.92
• Publications: 2 publications found

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]

KANSL1 Gene-Disease associations (from GenCC):

• Koolen-de Vries syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, G2P
• Koolen-de Vries syndrome due to a point mutation

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14311996).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015443.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KANSL1	NM_015443.4	MANE Select	c.1673A>G	p.Asp558Gly	missense	Exon 6 of 15	NP_056258.1	Q7Z3B3-1
	KANSL1	NM_001193466.2		c.1673A>G	p.Asp558Gly	missense	Exon 6 of 15	NP_001180395.1	Q7Z3B3-1
	KANSL1	NM_001379198.1		c.1673A>G	p.Asp558Gly	missense	Exon 7 of 16	NP_001366127.1	Q7Z3B3-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KANSL1	ENST00000432791.7	TSL:1 MANE Select	c.1673A>G	p.Asp558Gly	missense	Exon 6 of 15	ENSP00000387393.3	Q7Z3B3-1
	KANSL1	ENST00000262419.10	TSL:1	c.1673A>G	p.Asp558Gly	missense	Exon 6 of 15	ENSP00000262419.6	Q7Z3B3-1
	KANSL1	ENST00000918919.1		c.1673A>G	p.Asp558Gly	missense	Exon 6 of 16	ENSP00000588978.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000798 AC: 2 AN: 250550 AF XY: 0.00000739

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000177

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461660 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727112

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44698

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26126

East Asian (EAS) AF: 0.00 AC: 0 AN: 39674

South Asian (SAS) AF: 0.00 AC: 0 AN: 86230

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53378

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111918

Other (OTH) AF: 0.00 AC: 0 AN: 60388

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.37
CADD	Uncertain	24
DANN	Uncertain	0.99
Eigen	Benign	-0.16
Eigen_PC	Benign	-0.031
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.14	T
MetaSVM	Benign	-1.1	T
PhyloP100		3.9
PrimateAI	Benign	0.46	T
PROVEAN	Benign	-1.8	N
REVEL	Benign	0.11
Sift	Benign	0.19	T
Sift4G	Benign	0.35	T
Vest4		0.38
MutPred		0.32		Loss of stability (P = 0.0423)
MVP		0.17
MPC		0.68
ClinPred		0.26	T
GERP RS		3.8
gMVP		0.39
Mutation Taster		=91/9	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.12		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs551923672; hg19: chr17-44144078;