chrM-956-C-T

Variant names:

• chrM-956-C-T
• rs397515729
• ENST00000389680.2:n.309C>T

Variant summary

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

The ENST00000000000(RNR1):​n.309C>T variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Mitomap GenBank: 𝑓 0.00020 (AC: 12)
• Consequence: RNR1 ENST00000000000 non_coding_transcript_exon
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1 No linked disesase in Mitomap
• Conservation: PhyloP100: -5.51
• Publications: 0 publications found

Genes affected

MT-RNR1 (HGNC:7470): (mitochondrially encoded 12S RNA) Enables DNA binding activity and DNA-binding transcription factor binding activity. Involved in several processes, including osteoblast proliferation; regulation of carbohydrate utilization; and regulation of phosphate metabolic process. Located in extracellular space; mitochondrion; and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

MT-RNR1 Gene-Disease associations (from GenCC):

• mitochondrial disease

  Inheritance: Mitochondrial Classification: DEFINITIVE Submitted by: ClinGen

ACMG classification

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RNR1	unassigned_transcript_4785	n.309C>T		non_coding_transcript_exon_variant	Exon 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MT-RNR1	ENST00000389680.2	n.309C>T		non_coding_transcript_exon_variant	Exon 1 of 1	6

Frequencies

Mitomap GenBank AF: 0.00020 AC: 12

Gnomad homoplasmic AF: 0.000035 AC: 2 AN: 56419

Gnomad heteroplasmic AF: 0.0 AC: 0 AN: 56419

Alfa AF: 0.00231 Hom.: 27

Mitomap

No disease associated.

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jan 08, 2013

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant classified as Uncertain Significance - Favor Benign. The 956C>T variant in MTRNR1 has not been identified by our laboratory but has been reported once i n a publically available database (http://mitolsdb.igib.res.in). Mitochondrial v ariants follow a maternal inheritance pattern. Although penetrance of mitochondr ial variants can be reduced, given the lack of reported family history of hearin g loss in this family and no data to support a pathogenic role, we would lean to wards a more likely benign role for this variant. However, a conclusive interpre tation is not possible. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		-5.5

Other links and lift over

dbSNP: rs397515729; hg19: chrM-958;