UCP2 p.Tyr250Tyr

Variant names:

• chr11-73975555-T-T
• NM_003355.3:c.

Your query was ambiguous. Multiple possible variants found:

• chr11-73975556--
• chr11-73975556-G-A

Variant summary

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

The NM_003355.3(UCP2):​c. variant causes a exon region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: UCP2 NM_003355.3 exon_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.53
• Publications: 0 publications found

Genes affected

UCP2 (HGNC:12518): (uncoupling protein 2) Mitochondrial uncoupling proteins (UCP) are members of the larger family of mitochondrial anion carrier proteins (MACP). UCPs separate oxidative phosphorylation from ATP synthesis with energy dissipated as heat, also referred to as the mitochondrial proton leak. UCPs facilitate the transfer of anions from the inner to the outer mitochondrial membrane and the return transfer of protons from the outer to the inner mitochondrial membrane. They also reduce the mitochondrial membrane potential in mammalian cells. Tissue specificity occurs for the different UCPs and the exact methods of how UCPs transfer H+/OH- are not known. UCPs contain the three homologous protein domains of MACPs. This gene is expressed in many tissues, with the greatest expression in skeletal muscle. It is thought to play a role in nonshivering thermogenesis, obesity and diabetes. Chromosomal order is 5'-UCP3-UCP2-3'. [provided by RefSeq, Jul 2008]

UCP2 Gene-Disease associations (from GenCC):

• hyperinsulinism due to UCP2 deficiency

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003355.3. 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
	UCP2	NM_003355.3	MANE Select	c.		exon_region	Exon 7 of 8	NP_003346.2
	UCP2	NM_001381943.1		c.		exon_region	Exon 8 of 9	NP_001368872.1	P55851
	UCP2	NM_001381944.1		c.		exon_region	Exon 7 of 8	NP_001368873.1	P55851

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UCP2	ENST00000663595.2	MANE Select	c.		exon_region	Exon 7 of 8	ENSP00000499695.1	P55851
	UCP2	ENST00000310473.11	TSL:1	c.		exon_region	Exon 8 of 9	ENSP00000312029.3
	UCP2	ENST00000880151.1		c.		exon_region	Exon 7 of 8	ENSP00000550210.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.5

Splicing

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: chr11-73686600;