rs2357550

chr2-10442664-T-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_002539.3(ODC1):c.751-490A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.105 in 152,182 control chromosomes in the GnomAD database, including 957 homozygotes. 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: 𝑓 0.10 (957 hom., cov: 32)
• Consequence: ODC1 NM_002539.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.36

Genes affected

ODC1 (HGNC:8109): (ornithine decarboxylase 1) This gene encodes the rate-limiting enzyme of the polyamine biosynthesis pathway which catalyzes ornithine to putrescine. The activity level for the enzyme varies in response to growth-promoting stimuli and exhibits a high turnover rate in comparison to other mammalian proteins. Originally localized to both chromosomes 2 and 7, the gene encoding this enzyme has been determined to be located on 2p25, with a pseudogene located on 7q31-qter. Multiple alternatively spliced transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, Dec 2013]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.198 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ODC1	NM_002539.3	c.751-490A>G		intron_variant		ENST00000234111.9
ODC1	NM_001287188.2	c.364-490A>G		intron_variant
ODC1	NM_001287189.2	c.751-490A>G		intron_variant
ODC1	NM_001287190.2	c.751-490A>G		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ODC1	ENST00000234111.9	c.751-490A>G		intron_variant		1	NM_002539.3	P1

Frequencies

GnomAD3 genomes AF: 0.105 AC: 15908 AN: 152074 Hom.: 957 Cov.: 32

Gnomad AFR AF: 0.0926

Gnomad AMI AF: 0.0877

Gnomad AMR AF: 0.179

Gnomad ASJ AF: 0.0818

Gnomad EAS AF: 0.207

Gnomad SAS AF: 0.102

Gnomad FIN AF: 0.0883

Gnomad MID AF: 0.0350

Gnomad NFE AF: 0.0919

Gnomad OTH AF: 0.102

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.105 AC: 15919 AN: 152182 Hom.: 957 Cov.: 32 AF XY: 0.106 AC XY: 7911 AN XY: 74394

Gnomad4 AFR AF: 0.0925

Gnomad4 AMR AF: 0.179

Gnomad4 ASJ AF: 0.0818

Gnomad4 EAS AF: 0.208

Gnomad4 SAS AF: 0.102

Gnomad4 FIN AF: 0.0883

Gnomad4 NFE AF: 0.0919

Gnomad4 OTH AF: 0.103

Alfa AF: 0.101 Hom.: 200

Bravo AF: 0.114

Asia WGS AF: 0.173 AC: 601 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
Cadd	Benign	0.24
Dann	Benign	0.73

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: rs2357550; hg19: chr2-10582790;