rs1555894743

Variant names:

• chr21-34859554-G-GTGA
• rs1555894743
• NM_001754.5:c.530_532dupTCA

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2_Supporting PM4_Supporting

This summary comes from the ClinGen Evidence Repository: NM_001754.5(RUNX1):c.530_532dup (p.Ile177_Thr178insIle) is an in-frame insertion which affects a residue within the Runt Homology domain (AA 89-294) but does not impact a residue which has been established as a hotspot (PM4_Supporting). This variant is completely absent from all population databases with at least 20x coverage for RUNX1 (PM2_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, PM4_supporting. LINK:https://erepo.genome.network/evrepo/ui/classification/CA16616526/MONDO:0100083/008

• Frequency: Genomes: not found (cov: 33)
• Consequence: RUNX1 NM_001754.5 conservative_inframe_insertion
• Clinical Significance: Uncertain significance reviewed by expert panel U:2
• Conservation: PhyloP100: 8.01
• 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-AS1 (HGNC:56821): (RUNX1 antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• PM4: 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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RUNX1	NM_001754.5	MANE Select	c.530_532dupTCA	p.Ile177dup	conservative_inframe_insertion	Exon 6 of 9	NP_001745.2
	RUNX1	NM_001001890.3		c.449_451dupTCA	p.Ile150dup	conservative_inframe_insertion	Exon 3 of 6	NP_001001890.1
	RUNX1	NM_001122607.2		c.449_451dupTCA	p.Ile150dup	conservative_inframe_insertion	Exon 3 of 5	NP_001116079.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RUNX1	ENST00000675419.1	MANE Select	c.530_532dupTCA	p.Ile177dup	conservative_inframe_insertion	Exon 6 of 9	ENSP00000501943.1
	RUNX1	ENST00000300305.7	TSL:1	c.530_532dupTCA	p.Ile177dup	conservative_inframe_insertion	Exon 5 of 8	ENSP00000300305.3
	RUNX1	ENST00000344691.8	TSL:1	c.449_451dupTCA	p.Ile150dup	conservative_inframe_insertion	Exon 3 of 6	ENSP00000340690.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	2	-	Hereditary thrombocytopenia and hematological cancer predisposition syndrome associated with RUNX1 (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		8.0

Splicing

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

Other links and lift over

dbSNP: rs1555894743; hg19: chr21-36231851; COSMIC: COSV55897462;