21-34859530-A-T

Position:

• chr21-34859530-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PP3 PM2_Supporting PM1_Supporting

This summary comes from the ClinGen Evidence Repository: NM_001754.4(RUNX1):c.557T>A (p.Val186Asp) is a missense variant which is completely absent from all population databases with at least 20x coverage for RUNX1 (PM2_supporting). It has a REVEL score of 0.953 (> 0.75), supporting PP3. This variant is located within the Runt Homology Domain (RHD), affecting one of the residues (AA 105-204) but not an established hotspot residue (PM1_supporting). In summary, the clinical significance of this variant is uncertain. ACMG/AMP criteria applied, as specified by the Myeloid Malignancy Variant Curation Expert Panel for RUNX1: PM2_supporting, PP3, PM1_supporting. LINK:https://erepo.genome.network/evrepo/ui/classification/CA248819/MONDO:0011071/008

• Frequency: Genomes: not found (cov: 32)
• Consequence: RUNX1 NM_001754.5 missense
• Clinical Significance: Uncertain significance reviewed by expert panel U:2
• Conservation: PhyloP100: 9.32

Genes affected

RUNX1 (HGNC:10471): (RUNX family transcription factor 1) Core binding factor (CBF) is a heterodimeric transcription factor that binds to the core element of many enhancers and promoters. The protein encoded by this gene represents the alpha subunit of CBF and is thought to be involved in the development of normal hematopoiesis. Chromosomal translocations involving this gene are well-documented and have been associated with several types of leukemia. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

RUNX1 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM1: For more information check the summary or visit ClinGen Evidence Repository.
• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• PP3: For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RUNX1	NM_001754.5	c.557T>A	p.Val186Asp	missense_variant	6/9	ENST00000675419.1	NP_001745.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RUNX1	ENST00000675419.1	c.557T>A	p.Val186Asp	missense_variant	6/9		NM_001754.5	ENSP00000501943.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: reviewed by expert panel

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Nov 04, 2020

- -

Hereditary thrombocytopenia and hematological cancer predisposition syndrome associated with RUNX1 Uncertain:1

Uncertain significance, reviewed by expert panel

curation

ClinGen Myeloid Malignancy Variant Curation Expert Panel

Jul 30, 2019

The NM_001754.4:c.557T>A (p.Val186Asp) missense variant is completely absent from all population databases with at least 20x coverage for RUNX1 (PM2). It has a REVEL score >0.75 (0.953) (PP3). This variant affects one of the residues (AA 105-204) within the RHD (PM1_Supporting). In summary, the clinical significance of this variant is uncertain. ACMG/AMP criteria applied, as specified by the Myeloid Malignancy Variant Curation Expert Panel for RUNX1: PM2, PP3, PM1_Supporting. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.55	D
BayesDel_noAF	Pathogenic	0.56
CADD	Pathogenic	28
DANN	Uncertain	0.98
DEOGEN2	Pathogenic	1.0	D;.;.;.;.;.
Eigen	Pathogenic	0.73
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Pathogenic	0.99	D;D;.;D;D;D
M_CAP	Pathogenic	0.89	D
MetaRNN	Pathogenic	0.98	D;D;D;D;D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Uncertain	2.4	M;.;.;.;M;.
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-6.3	D;D;D;D;D;D
REVEL	Pathogenic	0.95
Sift	Pathogenic	0.0	D;D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D;.
Polyphen		1.0	D;B;B;.;D;.
Vest4		0.97
MutPred		0.86		Gain of relative solvent accessibility (P = 0.0215);.;.;Gain of relative solvent accessibility (P = 0.0215);Gain of relative solvent accessibility (P = 0.0215);.;
MVP		0.98
MPC		1.0
ClinPred		0.99	D
GERP RS		5.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.96
gMVP		0.97

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: rs797045927; hg19: chr21-36231827;