chr3-169084993-T-C

Variant names:

• chr3-169084993-T-C
• rs148539966
• NM_004991.4:c.3636A>G

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_004991.4(MECOM):​c.3636A>G​(p.Thr1212Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,198 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. T1212T) has been classified as Likely benign.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: MECOM NM_004991.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.276
• Publications: 1 publications found

Genes affected

MECOM (HGNC:3498): (MDS1 and EVI1 complex locus) The protein encoded by this gene is a transcriptional regulator and oncoprotein that may be involved in hematopoiesis, apoptosis, development, and cell differentiation and proliferation. The encoded protein can interact with CTBP1, SMAD3, CREBBP, KAT2B, MAPK8, and MAPK9. This gene can undergo translocation with the AML1 gene, resulting in overexpression of this gene and the onset of leukemia. Several transcript variants encoding a few different isoforms have been found for this gene. [provided by RefSeq, Mar 2011]

MECOM Gene-Disease associations (from GenCC):

• MECOM-associated syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• radioulnar synostosis with amegakaryocytic thrombocytopenia 2

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• radio-ulnar synostosis-amegakaryocytic thrombocytopenia syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.59).
• BP7: Synonymous conserved (PhyloP=-0.276 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004991.4. 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
	MECOM	NM_004991.4	MANE Select	c.3636A>G	p.Thr1212Thr	synonymous	Exon 17 of 17	NP_004982.2	Q03112-3
	MECOM	NM_001366466.2		c.3609A>G	p.Thr1203Thr	synonymous	Exon 16 of 16	NP_001353395.1	Q03112-7
	MECOM	NM_001105077.4		c.3267A>G	p.Thr1089Thr	synonymous	Exon 17 of 17	NP_001098547.3	Q03112-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MECOM	ENST00000651503.2	MANE Select	c.3636A>G	p.Thr1212Thr	synonymous	Exon 17 of 17	ENSP00000498411.1	Q03112-3
	MECOM	ENST00000264674.7	TSL:1	c.3267A>G	p.Thr1089Thr	synonymous	Exon 17 of 17	ENSP00000264674.3	Q03112-4
	MECOM	ENST00000433243.6	TSL:1	c.3075A>G	p.Thr1025Thr	synonymous	Exon 17 of 17	ENSP00000394302.2	A0A0C3SFZ7

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152198 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 30

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152198 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74344

African (AFR) AF: 0.00 AC: 0 AN: 41452

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: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10610

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

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68040

Other (OTH) AF: 0.00 AC: 0 AN: 2094

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.59
CADD	Benign	0.94
DANN	Benign	0.64
PhyloP100		-0.28

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

Other links and lift over

dbSNP: rs148539966; hg19: chr3-168802781;