rs999807714

chr21-34834486-T-G

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 2P and 13B. PM2 BP4_Strong BP6_Very_Strong BP7

The NM_001754.5(RUNX1):c.729A>C(p.Pro243=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000133 in 150,582 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★★).

• Frequency: Genomes: 𝑓 0.000013 (0 hom., cov: 31)
• Consequence: RUNX1 NM_001754.5 synonymous
• Clinical Significance: Likely benign reviewed by expert panel B:3
• Conservation: PhyloP100: 1.14

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 Benign. Variant got -11 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.54).
• BP6: Variant 21-34834486-T-G is Benign according to our data. Variant chr21-34834486-T-G is described in ClinVar as [Likely_benign]. Clinvar id is 436613.Status of the report is reviewed_by_expert_panel, 3 stars.
• BP7: Synonymous conserved (PhyloP=1.14 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RUNX1	NM_001754.5	c.729A>C	p.Pro243=	synonymous_variant	7/9	ENST00000675419.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RUNX1	ENST00000675419.1	c.729A>C	p.Pro243=	synonymous_variant	7/9		NM_001754.5	A1

Frequencies

GnomAD3 genomes AF: 0.0000133 AC: 2 AN: 150582 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000490

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: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome AF: 0.0000133 AC: 2 AN: 150582 Hom.: 0 Cov.: 31 AF XY: 0.0000136 AC XY: 1 AN XY: 73450

Gnomad4 AFR AF: 0.0000490

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000355 Hom.: 0

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: reviewed by expert panel

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Apr 27, 2017

- -

Hereditary thrombocytopenia and hematologic cancer predisposition syndrome Benign:1

Likely benign, reviewed by expert panel

curation

ClinGen Myeloid Malignancy Variant Curation Expert Panel

Jun 25, 2021

This synonymous variant is predicted by SSF, MES, and SpliceAI to lead to either no change/an increase/a decrease by no more than 10% in the canonical splice site score and no putative cryptic splice sites are created; in addition, evolutionary conservation prediction algorithms predict the site as not being highly conserved (PhyloP score = 0.975787 in GRCh37/1.06724 in GRCh38 or the variant is the reference nucleotide in one primate and/or three mammal species) (BP4+BP7). In summary, this variant meets criteria to be classified as likely benign. ACMG/AMP criteria applied, as specified by the ClinGen Myeloid Malignancy Variant Curation Expert Panel for RUNX1: BP4 and BP7. -

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

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Aug 28, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.54
Cadd	Benign	11
Dann	Benign	0.81

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		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: rs999807714; hg19: chr21-36206783;