rs1555731275

Variant names:

• chr17-46033155-T-C
• rs1555731275
• NM_015443.4:c.2762A>G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_015443.4(KANSL1):​c.2762A>G​(p.His921Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: KANSL1 NM_015443.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.96
• Publications: 0 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, G2P, Labcorp Genetics (formerly Invitae), ClinGen
• 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 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.843

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KANSL1	NM_015443.4	c.2762A>G	p.His921Arg	missense_variant	Exon 13 of 15	ENST00000432791.7	NP_056258.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KANSL1	ENST00000432791.7	c.2762A>G	p.His921Arg	missense_variant	Exon 13 of 15	1	NM_015443.4	ENSP00000387393.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Jan 27, 2016

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Uncertain	26
DANN	Uncertain	1.0
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.92	.;.;.;.;D;D;D;D;D;D
M_CAP	Uncertain	0.12	D
MetaRNN	Pathogenic	0.84	D;D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.62	D
PhyloP100		4.0
PrimateAI	Pathogenic	0.80	D
PROVEAN	Pathogenic	-7.2	D;.;.;.;.;D;.;.;.;.
REVEL	Pathogenic	0.83
Sift	Pathogenic	0.0	D;.;.;.;.;D;.;.;.;.
Sift4G	Uncertain	0.0070	.;D;.;.;D;D;.;.;.;.
Vest4		0.75, 0.72, 0.75
MutPred		0.60		Gain of MoRF binding (P = 0.0198);Gain of MoRF binding (P = 0.0198);.;.;.;Gain of MoRF binding (P = 0.0198);Gain of MoRF binding (P = 0.0198);.;.;.;
MVP		0.93
MPC		1.5
ClinPred		1.0	D
GERP RS		6.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
gMVP		0.96
Mutation Taster		=22/78	disease causing

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

Other links and lift over

dbSNP: rs1555731275; hg19: chr17-44110521; COSMIC: COSV52236828; COSMIC: COSV52236828;