21-34788158-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_001754.5(RUNX1):c.*3977G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000227 in 233,436 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 Benign (★★★).

• Frequency:
  • Genomes: 𝑓 0.00016 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00036 (0 hom.)
• Consequence: RUNX1 NM_001754.5 3_prime_UTR
• Clinical Significance: Benign reviewed by expert panel B:2
• Conservation: PhyloP100: -1.43

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 -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP6: Variant 21-34788158-C-T is Benign according to our data. Variant chr21-34788158-C-T is described in ClinVar as [Benign]. Clinvar id is 339799.Status of the report is reviewed_by_expert_panel, 3 stars.
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000158 (24/152326) while in subpopulation EAS AF= 0.00405 (21/5186). AF 95% confidence interval is 0.00271. There are 0 homozygotes in gnomad4. There are 13 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd at 25 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RUNX1	NM_001754.5	c.*3977G>A		3_prime_UTR_variant	9/9	ENST00000675419.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RUNX1	ENST00000675419.1	c.*3977G>A		3_prime_UTR_variant	9/9		NM_001754.5	A1
RUNX1	ENST00000300305.7	c.*3977G>A		3_prime_UTR_variant	8/8	1		A1
RUNX1	ENST00000344691.8	c.*3977G>A		3_prime_UTR_variant	6/6	1		P4
RUNX1	ENST00000437180.5	c.*3977G>A		3_prime_UTR_variant	9/9	5		A1

Frequencies

GnomAD3 genomes AF: 0.000164 AC: 25 AN: 152208 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00423

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000358 AC: 29 AN: 81110 Hom.: 0 Cov.: 0 AF XY: 0.000375 AC XY: 14 AN XY: 37310

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00219

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000200

Gnomad4 OTH exome AF: 0.000443

GnomAD4 genome AF: 0.000158 AC: 24 AN: 152326 Hom.: 0 Cov.: 32 AF XY: 0.000174 AC XY: 13 AN XY: 74500

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.000131

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00405

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.000125

Asia WGS AF: 0.00144 AC: 5 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: reviewed by expert panel

Submissions by phenotype

Hereditary thrombocytopenia and hematologic cancer predisposition syndrome Benign:1

Benign, reviewed by expert panel

curation

ClinGen Myeloid Malignancy Variant Curation Expert Panel

May 13, 2020

The c.*3977G>A variant in the 3' UTR has an MAF of 0.003831 (0.38%, 12/3132 alleles) in the East Asian subpopulation of the gnomAD v3 cohort and is >= 0.0015 (0.15%) (BA1). In summary, this variant meets criteria to be classified as benign. ACMG/AMP criteria applied, as specified by the Myeloid Malignancy Variant Curation Expert Panel for RUNX1: BA1. -

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

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
Cadd	Benign	0.57
Dann	Benign	0.67

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: rs189557277; hg19: chr21-36160455;