9-35657864-C-A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2PP5BP4

The ENST00000363046.2(RMRP):n.156G>T variant causes a non coding transcript exon change. The variant allele was found at a frequency of 0.0000101 in 692,950 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0000068 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

RMRP
ENST00000363046.2 non_coding_transcript_exon

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:2U:1

Conservation

PhyloP100: 7.04

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

cartilage-hair hypoplasia
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Myriad Women’s Health, G2P

RMRP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 9-35657864-C-A is Pathogenic according to our data. Variant chr9-35657864-C-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 550880.Status of the report is no_assertion_criteria_provided, 0 stars.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.28). . 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.156G>T		non_coding_transcript_exon_variant	Exon 1 of 1	ENST00000363046.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RMRP	ENST00000363046.2 link	n.156G>T		non_coding_transcript_exon_variant	Exon 1 of 1	6	NR_003051.4

Frequencies

GnomAD3 genomes

AF:

0.00000683

AC:

AN:

146354

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000766

AC:

AN:

130488

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000201

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000110

AC:

AN:

546596

Hom.:

Cov.:

AF XY:

0.00000675

AC XY:

AN XY:

296112

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

14850

American (AMR)

AF:

0.00

AC:

AN:

34576

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19960

East Asian (EAS)

AF:

0.00

AC:

AN:

32104

South Asian (SAS)

AF:

0.00

AC:

AN:

62674

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33192

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2430

European-Non Finnish (NFE)

AF:

0.0000189

AC:

AN:

316638

Other (OTH)

AF:

0.00

AC:

AN:

30172

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000683

AC:

AN:

146354

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

71546

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

36064

American (AMR)

AF:

0.00

AC:

AN:

14958

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3446

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

310

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67990

Other (OTH)

AF:

0.00

AC:

AN:

2018

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Metaphyseal chondrodysplasia, McKusick type

Pathogenic:1Uncertain:1

Jul 29, 2025

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

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: RMRP n.155G>T (also known as NC_000009.11: chr9:g.35657861C>A) alters a conserved nucleotide in the non-coding RNA. The variant allele was found at a frequency of 7.7e-06 in 130488 control chromosomes (gnomAD). The variant n.155G>T (also known as n.154G>T) has been reported in the literature in multiple compound heterozygous individuals affected with clinical features of RMRP-related disorders (e.g. Ridanpaa_2002, Vakkilainen_2020) and in patients without reported phenotype details (Stranneheim_2021). In addition, a different variant affecting the same nucleotide (n.155G>C) has been also described in patient(s) affected with Cartilage-Hair hypoplasia (e.g. PMID 25663137), further supporting a structural importance for this nucleotide. These data indicate that the variant is likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 12107819, 31413121, 33726816). ClinVar contains an entry for this variant (Variation ID: 550880). Based on the evidence outlined above, the variant was classified as likely pathogenic.

Oct 09, 2017

Counsyl

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

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.

Metaphyseal dysplasia without hypotrichosis

Pathogenic:1

Sep 21, 2022

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.28

CADD

Benign

(source)

DANN

Benign

0.84

PhyloP100

7.0

PromoterAI

-0.13

Neutral

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over