rs1554843829

Variant names:

• chr10-75022073-GA-G
• rs1554843829
• NM_012330.4:c.3216delA

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_012330.4(KAT6B):​c.3216delA​(p.Glu1073ArgfsTer41) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. E1072E) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: KAT6B NM_012330.4 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 5.92
• Publications: 0 publications found

Genes affected

KAT6B (HGNC:17582): (lysine acetyltransferase 6B) The protein encoded by this gene is a histone acetyltransferase and component of the MOZ/MORF protein complex. In addition to its acetyltransferase activity, the encoded protein has transcriptional activation activity in its N-terminal end and transcriptional repression activity in its C-terminal end. This protein is necessary for RUNX2-dependent transcriptional activation and could be involved in brain development. Mutations have been found in patients with genitopatellar syndrome. A translocation of this gene and the CREBBP gene results in acute myeloid leukemias. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2012]

KAT6B Gene-Disease associations (from GenCC):

• blepharophimosis - intellectual disability syndrome, SBBYS type

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet
• genitopatellar syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P
• KAT6B-related multiple congenital anomalies syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• RASopathy

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ENSG00000234149 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 10-75022073-GA-G is Pathogenic according to our data. Variant chr10-75022073-GA-G is described in ClinVar as Pathogenic. ClinVar VariationId is 438296.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KAT6B	NM_012330.4	c.3216delA	p.Glu1073ArgfsTer41	frameshift_variant	Exon 16 of 18	ENST00000287239.10	NP_036462.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KAT6B	ENST00000287239.10	c.3216delA	p.Glu1073ArgfsTer41	frameshift_variant	Exon 16 of 18	1	NM_012330.4	ENSP00000287239.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Blepharophimosis - intellectual disability syndrome, SBBYS type Pathogenic:1

May 09, 2016

Molecular Genetics Laboratory, BC Children's and BC Women's Hospitals

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		5.9
Mutation Taster		=0/200	disease causing (ClinVar)

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: rs1554843829; hg19: chr10-76781831;