21-34887029-C-A

Variant names:

• chr21-34887029-C-A
• rs766206710
• NM_001754.5:c.165G>T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 1P and 2B. PM2_Supporting BP4 BP7

This summary comes from the ClinGen Evidence Repository: NM_001754.5(RUNX1):c.165G>T (p.Ala55=) is a synonymous variant which has a SpliceAI score ≤ 0.20 (0.02) (BP4). This variant has a SpliceAI score ≤ 0.20 (0.02) and evolutionary conservation algorithms predict the site as not being conserved (PhyloP score ≤ 2.0 (1.33)) (BP7). 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: BP4, BP7, PM2_supporting. LINK:https://erepo.genome.network/evrepo/ui/classification/CA10014579/MONDO:0011071/008

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: RUNX1 NM_001754.5 synonymous
• Clinical Significance: Likely benign reviewed by expert panel B:2
• Conservation: PhyloP100: 1.34

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]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• BP4: For more information check the summary or visit ClinGen Evidence Repository.
• BP7: For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RUNX1	NM_001754.5	c.165G>T	p.Ala55Ala	synonymous_variant	Exon 4 of 9	ENST00000675419.1	NP_001745.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RUNX1	ENST00000675419.1	c.165G>T	p.Ala55Ala	synonymous_variant	Exon 4 of 9		NM_001754.5	ENSP00000501943.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000432 AC: 1 AN: 231692 Hom.: 0 AF XY: 0.00000781 AC XY: 1 AN XY: 128032

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000293

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 6.90e-7 AC: 1 AN: 1449128 Hom.: 0 Cov.: 35 AF XY: 0.00000139 AC XY: 1 AN XY: 721240

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: reviewed by expert panel

Submissions by phenotype

Hereditary thrombocytopenia and hematologic cancer predisposition syndrome Benign:1

Sep 18, 2024

ClinGen Myeloid Malignancy Variant Curation Expert Panel

Significance: Likely benign

Review Status: reviewed by expert panel

Collection Method: curation

NM_001754.5(RUNX1):c.165G>T (p.Ala55=) is a synonymous variant which has a SpliceAI score ≤ 0.20 (0.02) (BP4). This variant has a SpliceAI score ≤ 0.20 (0.02) and evolutionary conservation algorithms predict the site as not being conserved (PhyloP score ≤ 2.0 (1.33)) (BP7). 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: BP4, BP7, PM2_supporting. -

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

Nov 11, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.12
CADD	Benign	15
DANN	Benign	0.92

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: rs766206710; hg19: chr21-36259326;