3-49026331-C-G

Variant names:

• chr3-49026331-C-G
• rs72624913
• NM_000884.3:c.999G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000884.3(IMPDH2):​c.999G>C​(p.Thr333Thr) 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.

• Frequency: Genomes: not found (cov: 33)
• Consequence: IMPDH2 NM_000884.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.397
• Publications: 0 publications found

Genes affected

IMPDH2 (HGNC:6053): (inosine monophosphate dehydrogenase 2) This gene encodes the rate-limiting enzyme in the de novo guanine nucleotide biosynthesis. It is thus involved in maintaining cellular guanine deoxy- and ribonucleotide pools needed for DNA and RNA synthesis. The encoded protein catalyzes the NAD-dependent oxidation of inosine-5'-monophosphate into xanthine-5'-monophosphate, which is then converted into guanosine-5'-monophosphate. This gene is up-regulated in some neoplasms, suggesting it may play a role in malignant transformation. [provided by RefSeq, Jul 2008]

ENSG00000290315 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (REVEL=0.02).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000884.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IMPDH2	NM_000884.3	MANE Select	c.999G>C	p.Thr333Thr	synonymous	Exon 9 of 14	NP_000875.2
	IMPDH2	NM_001410759.1		c.999G>C	p.Thr333Thr	synonymous	Exon 9 of 15	NP_001397688.1
	IMPDH2	NM_001410760.1		c.924G>C	p.Thr308Thr	synonymous	Exon 8 of 14	NP_001397689.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IMPDH2	ENST00000326739.9	TSL:1 MANE Select	c.999G>C	p.Thr333Thr	synonymous	Exon 9 of 14	ENSP00000321584.4
	ENSG00000290315	ENST00000703936.1		c.3039G>C	p.Thr1013Thr	synonymous	Exon 17 of 22	ENSP00000515567.1
	IMPDH2	ENST00000429182.6	TSL:5	c.999G>C	p.Thr333Thr	synonymous	Exon 9 of 15	ENSP00000393525.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.52
CADD	Benign	2.7
DANN	Benign	0.68
PhyloP100		-0.40

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: rs72624913; hg19: chr3-49063764;