21-29342455-T-G

Variant names:

• chr21-29342455-T-G
• NM_001186.4:c.1833T>G
• BACH1 p.Gly611Gly

Variant summary

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

The NM_001186.4(BACH1):​c.1833T>G​(p.Gly611Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. G611G) has been classified as Benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: BACH1 NM_001186.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.61
• Publications: 0 publications found

Genes affected

BACH1 (HGNC:935): (BTB domain and CNC homolog 1) This gene encodes a transcription factor that belongs to the cap'n'collar type of basic region leucine zipper factor family (CNC-bZip). The encoded protein contains broad complex, tramtrack, bric-a-brac/poxvirus and zinc finger (BTB/POZ) domains, which is atypical of CNC-bZip family members. These BTB/POZ domains facilitate protein-protein interactions and formation of homo- and/or hetero-oligomers. When this encoded protein forms a heterodimer with MafK, it functions as a repressor of Maf recognition element (MARE) and transcription is repressed. Multiple alternatively spliced transcript variants have been identified for this gene. [provided by RefSeq, May 2009]

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=-0.69).
• BP7: Synonymous conserved (PhyloP=-2.61 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001186.4. 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
	BACH1	NM_001186.4	MANE Select	c.1833T>G	p.Gly611Gly	synonymous	Exon 5 of 5	NP_001177.1	O14867
	BACH1	NM_206866.3		c.1833T>G	p.Gly611Gly	synonymous	Exon 5 of 5	NP_996749.1	O14867
	BACH1	NR_027655.3		n.1956-9179T>G		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BACH1	ENST00000286800.8	TSL:1 MANE Select	c.1833T>G	p.Gly611Gly	synonymous	Exon 5 of 5	ENSP00000286800.3	O14867
	BACH1	ENST00000399921.5	TSL:1	c.1833T>G	p.Gly611Gly	synonymous	Exon 5 of 5	ENSP00000382805.1	O14867
	BACH1	ENST00000888449.1		c.1968T>G	p.Gly656Gly	synonymous	Exon 6 of 6	ENSP00000558508.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 59

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.69
CADD	Benign	0.17
DANN	Benign	0.71
PhyloP100		-2.6

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr21-30714776;