rs1554651473
Variant summary
Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP5_Moderate
The ENST00000363046.2(RMRP):n.-7_-6insTACTACTCTGTGAAGCTG variant causes a upstream gene change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000728 in 687,280 control chromosomes in the GnomAD database, with no homozygous occurrence. It is difficult to determine the true allele frequency of this variant because it is of type INS_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Pathogenic (★).
Frequency
Consequence
ENST00000363046.2 upstream_gene
Scores
Clinical Significance
Conservation
Publications
- cartilage-hair hypoplasiaInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Myriad Women’s Health, G2P
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ACMG classification
Our verdict: Uncertain_significance. The variant received 2 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| RMRP | NR_003051.4 | n.-7_-6insTACTACTCTGTGAAGCTG | upstream_gene_variant |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| RMRP | ENST00000363046.2 | n.-7_-6insTACTACTCTGTGAAGCTG | upstream_gene_variant | 6 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152156Hom.: 0 Cov.: 34 show subpopulations
GnomAD2 exomes AF: 0.00000788 AC: 1AN: 126964 AF XY: 0.00 show subpopulations
GnomAD4 exome AF: 0.00000747 AC: 4AN: 535124Hom.: 0 Cov.: 0 AF XY: 0.00000347 AC XY: 1AN XY: 287848 show subpopulations
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152156Hom.: 0 Cov.: 34 AF XY: 0.0000134 AC XY: 1AN XY: 74356 show subpopulations
ClinVar
Submissions by phenotype
Metaphyseal chondrodysplasia, McKusick type Pathogenic:1
This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
Anauxetic dysplasia Pathogenic:1
This variant occurs in the RMRP gene, which encodes an RNA molecule that does not result in a protein product. This variant is present in population databases (no rsID available, gnomAD 0.002%). While this particular variant has not been reported in the literature, it is located in the promoter region between the TATA box and the transcription initiation site, and other insertions and duplications immediately upstream of the coding sequence have been reported in individuals affected with cartilage-hair hypoplasia-anauxetic dysplasia (CHH-AD) spectrum disorders (PMID: 16244706, 11207361, 12107819). While functional studies for this variant have not been reported, experimental analyses using patient derived cells, as well as in vitro transfection studies, have shown that promoter insertions result in silencing of RMRP transcription and reduced expression of the gene product (PMID: 11207361, 16254002). For these reasons, this variant has been classified as Pathogenic. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at