chr21-34799317-AAGTTCTGCAGAG-A

Variant names:

• chr21-34799317-AAGTTCTGCAGAG-A
• rs748122795
• NM_001754.5:c.939_950delCTCTGCAGAACT

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS1

This summary comes from the ClinGen Evidence Repository: NM_001754.5(RUNX1):c.939_950del (p.Ala315_Ser318del) is an in-frame deletion which does not occur within the Runt Homology Domain (AA 89-204) (PM4 not applied). This variant has a MAF of 0.0001858 (0.01858%, 24/129186, 24 alleles) in the European (non-Finnish) subpopulation of the gnomAD cohort, which is between 0.00015 (0.015%) and 0.0015 (0.15%) (BS1). In summary, this variant meets criteria to be classified as likely benign. ACMG/AMP criteria applied, as specified by the Myeloid Malignancy Variant Curation Expert Panel for RUNX1: BS1. LINK:https://erepo.genome.network/evrepo/ui/classification/CA10014262/MONDO:0011071/008

• Frequency:
  • Genomes: 𝑓 0.000059 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000087 (0 hom.)
• Consequence: RUNX1 NM_001754.5 disruptive_inframe_deletion
• Clinical Significance: Likely benign reviewed by expert panel U:3 B:2
• Conservation: PhyloP100: 7.84
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• hereditary thrombocytopenia and hematologic cancer predisposition syndrome

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• hereditary thrombocytopenia and hematological cancer predisposition syndrome associated with RUNX1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Genomics England PanelApp, Ambry Genetics, G2P
• acute myeloid leukemia

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BS1: For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001754.5. 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
	RUNX1	NM_001754.5	MANE Select	c.939_950delCTCTGCAGAACT	p.Ser314_Leu317del	disruptive_inframe_deletion	Exon 8 of 9	NP_001745.2
	RUNX1	NM_001001890.3		c.858_869delCTCTGCAGAACT	p.Ser287_Leu290del	disruptive_inframe_deletion	Exon 5 of 6	NP_001001890.1	Q01196-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RUNX1	ENST00000675419.1	MANE Select	c.939_950delCTCTGCAGAACT	p.Ser314_Leu317del	disruptive_inframe_deletion	Exon 8 of 9	ENSP00000501943.1	Q01196-8
	RUNX1	ENST00000300305.7	TSL:1	c.939_950delCTCTGCAGAACT	p.Ser314_Leu317del	disruptive_inframe_deletion	Exon 7 of 8	ENSP00000300305.3	Q01196-8
	RUNX1	ENST00000344691.8	TSL:1	c.858_869delCTCTGCAGAACT	p.Ser287_Leu290del	disruptive_inframe_deletion	Exon 5 of 6	ENSP00000340690.4	Q01196-1

Frequencies

GnomAD3 genomes AF: 0.0000591 AC: 9 AN: 152178 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000724

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000188

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000588

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000191 AC: 48 AN: 251486 AF XY: 0.000243

Gnomad AFR exome AF: 0.000185

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.000924

Gnomad NFE exome AF: 0.000211

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000869 AC: 127 AN: 1461870 Hom.: 0 AF XY: 0.0000935 AC XY: 68 AN XY: 727240

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

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.000749 AC: 40 AN: 53412

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

European-Non Finnish (NFE) AF: 0.0000710 AC: 79 AN: 1111998

Other (OTH) AF: 0.000132 AC: 8 AN: 60394

GnomAD4 genome AF: 0.0000591 AC: 9 AN: 152178 Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4 AN XY: 74350

African (AFR) AF: 0.0000724 AC: 3 AN: 41440

American (AMR) AF: 0.00 AC: 0 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5194

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.000188 AC: 2 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000588 AC: 4 AN: 68034

Other (OTH) AF: 0.00 AC: 0 AN: 2086

Alfa AF: 0.000142 Hom.: 0

Bravo AF: 0.0000529

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	-	1	Hereditary thrombocytopenia and hematologic cancer predisposition syndrome (1)
-	-	1	Hereditary thrombocytopenia and hematological cancer predisposition syndrome associated with RUNX1 (1)
-	1	-	Inborn genetic diseases (1)
-	1	-	not provided (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		7.8
Mutation Taster		=100/100

Splicing

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

Other links and lift over

dbSNP: rs748122795; hg19: chr21-36171614;