Variant chr9-35657838-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 10P and 1B. PM2PP5_Very_StrongBP4

The NR_003051.4(RMRP):n.182G>A variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000231 in 693,312 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

Frequency

Genomes: 𝑓 0.000028 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

RMRP
NR_003051.4 non_coding_transcript_exon

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:2

Conservation

PhyloP100: -0.0390

Variant links:

Genes affected

RMRP (HGNC:10031): (RNA component of mitochondrial RNA processing endoribonuclease) This gene encodes the RNA component of mitochondrial RNA processing endoribonuclease, which cleaves mitochondrial RNA at a priming site of mitochondrial DNA replication. This RNA also interacts with the telomerase reverse transcriptase catalytic subunit to form a distinct ribonucleoprotein complex that has RNA-dependent RNA polymerase activity and produces double-stranded RNAs that can be processed into small interfering RNA. Mutations in this gene are associated with cartilage-hair hypoplasia.[provided by RefSeq, Mar 2010]

RMRP links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 9-35657838-C-T is Pathogenic according to our data. Variant chr9-35657838-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 928881.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr9-35657838-C-T is described in Lovd as [Likely_pathogenic].

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.48). . Strength limited to SUPPORTING due to the PP5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RMRP	NR_003051.4 link	n.182G>A		non_coding_transcript_exon_variant	Exon 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RMRP	ENST00000363046.1 link	n.180G>A		non_coding_transcript_exon_variant	Exon 1 of 1	6

Frequencies

GnomAD3 genomes

AF:

0.0000275

AC:

AN:

145276

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000134

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000461

AC:

AN:

130180

Hom.:

AF XY:

0.0000281

AC XY:

AN XY:

71116

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000247

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000219

AC:

AN:

548036

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

296766

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000144

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000160

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000947

Gnomad4 OTH exome

AF:

0.0000987

GnomAD4 genome

AF:

0.0000275

AC:

AN:

145276

Hom.:

Cov.:

AF XY:

0.0000422

AC XY:

AN XY:

71062

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000134

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000302

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Metaphyseal chondrodysplasia, McKusick type

Pathogenic:1

Oct 24, 2022

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: RMRP n.181G>A alters a nucleotide in the non-coding RNA and was at the nucleotides involved in base pairing in the secondary structure of the RNA molecule, compromising the hairpin structure topology (Gomes_2019). Also, this variant was located in P12 domain which is important region for binding POP1 and RPP38 to the RNA molecule (PMID: 15096576). The variant allele was found at a frequency of 4.6e-05 in 130180 control chromosomes (gnomAD). n.181G>A has been reported in the literature in individuals affected with Cartilage-Hair Hypoplasia (Ridanpaa 2002, Hermanns 2005, Hermanns 2006, Castilla-Cortazar 2017, Gomes_2019). These data indicate that the variant is very likely to be associated with disease. At least one publication reported experimental evidence evaluating an impact on RMRP expression. The most pronounced variant effect results in 10%-<30% of normal RMRP expression (Hermanns 2005). One ClinVar submitter (evaluation after 2014) cites the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -

Anauxetic dysplasia

Pathogenic:1

Dec 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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 0.03%). This variant has been observed in individual(s) with clinical features of cartilage-hair hypoplasia anauxetic dysplasia spectrum disorders (PMID: 16254002, 16838329, 27862957). This variant is also known as 180G>A and c.-542C>C/T. ClinVar contains an entry for this variant (Variation ID: 928881). For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.48

CADD

Benign

2.2

DANN

Benign

0.96

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over