1-109739319-G-T

Variant names:

• chr1-109739319-G-T
• rs10735234
• NM_000849.5:c.189+110C>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000849.5(GSTM3):​c.189+110C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000418 in 478,924 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.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000042 (0 hom.)
• Consequence: GSTM3 NM_000849.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.366
• Publications: 44 publications found

Genes affected

GSTM3 (HGNC:4635): (glutathione S-transferase mu 3) Cytosolic and membrane-bound forms of glutathione S-transferase are encoded by two distinct supergene families. At present, eight distinct classes of the soluble cytoplasmic mammalian glutathione S-transferases have been identified: alpha, kappa, mu, omega, pi, sigma, theta and zeta. This gene encodes a glutathione S-transferase that belongs to the mu class. The mu class of enzymes functions in the detoxification of electrophilic compounds, including carcinogens, therapeutic drugs, environmental toxins and products of oxidative stress, by conjugation with glutathione. The genes encoding the mu class of enzymes are organized in a gene cluster on chromosome 1p13.3 and are known to be highly polymorphic. These genetic variations can change an individual's susceptibility to carcinogens and toxins as well as affect the toxicity and efficacy of certain drugs. Mutations of this class mu gene have been linked with a slight increase in a number of cancers, likely due to exposure with environmental toxins. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2008]

GSTM5 (HGNC:4637): (glutathione S-transferase mu 5) Cytosolic and membrane-bound forms of glutathione S-transferase are encoded by two distinct supergene families. At present, eight distinct classes of the soluble cytoplasmic mammalian glutathione S-transferases have been identified: alpha, kappa, mu, omega, pi, sigma, theta and zeta. This gene encodes a glutathione S-transferase that belongs to the mu class. The mu class of enzymes functions in the detoxification of electrophilic compounds, including carcinogens, therapeutic drugs, environmental toxins and products of oxidative stress, by conjugation with glutathione. The genes encoding the mu class of enzymes are organized in a gene cluster on chromosome 1p13.3 and are known to be highly polymorphic. These genetic variations can change an individual's susceptibility to carcinogens and toxins as well as affect the toxicity and efficacy of certain drugs. Diversification of these genes has occurred in regions encoding substrate-binding domains, as well as in tissue expression patterns, to accommodate an increasing number of foreign compounds. [provided by RefSeq, Jul 2008]

ENSG00000241720 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GSTM3	NM_000849.5	c.189+110C>A		intron_variant	Intron 4 of 8	ENST00000361066.7	NP_000840.2
GSTM3	NR_024537.2	n.423+110C>A		intron_variant	Intron 3 of 7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GSTM3	ENST00000361066.7	c.189+110C>A		intron_variant	Intron 4 of 8	1	NM_000849.5	ENSP00000354357.2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000418 AC: 2 AN: 478924 Hom.: 0 AF XY: 0.00000792 AC XY: 2 AN XY: 252628

African (AFR) AF: 0.00 AC: 0 AN: 14708

American (AMR) AF: 0.00 AC: 0 AN: 28696

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 13070

East Asian (EAS) AF: 0.00 AC: 0 AN: 34774

South Asian (SAS) AF: 0.00 AC: 0 AN: 33032

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 42750

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2968

European-Non Finnish (NFE) AF: 0.00000705 AC: 2 AN: 283750

Other (OTH) AF: 0.00 AC: 0 AN: 25176

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	1.4
DANN	Benign	0.67
PhyloP100		-0.37

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: rs10735234; hg19: chr1-110281941;