9-35657953-T-C

Variant names:

• chr9-35657953-T-C
• rs530883024
• ENST00000363046.2:n.67A>G

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4

The ENST00000363046.2(RMRP):​n.67A>G variant causes a non coding transcript exon change. The variant allele was found at a frequency of 0.0000628 in 700,432 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000079 (0 hom., cov: 34)
  • Exomes 𝑓: 0.000058 (1 hom.)
• Consequence: RMRP ENST00000363046.2 non_coding_transcript_exon
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 7.16
• Publications: 0 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.17).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000363046.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RMRP	NR_003051.4	MANE Select	n.67A>G		non_coding_transcript_exon	Exon 1 of 1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RMRP	ENST00000363046.2	TSL:6 MANE Select	n.67A>G		non_coding_transcript_exon	Exon 1 of 1

Frequencies

GnomAD3 genomes AF: 0.0000788 AC: 12 AN: 152216 Hom.: 0 Cov.: 34

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000460 AC: 6 AN: 130486 AF XY: 0.0000702

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: 0.0000804

Gnomad OTH exome AF: 0.000249

GnomAD4 exome AF: 0.0000584 AC: 32 AN: 548098 Hom.: 1 Cov.: 0 AF XY: 0.0000539 AC XY: 16 AN XY: 296798

African (AFR) AF: 0.00 AC: 0 AN: 15734

American (AMR) AF: 0.00 AC: 0 AN: 34708

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 20026

East Asian (EAS) AF: 0.00 AC: 0 AN: 32104

South Asian (SAS) AF: 0.0000160 AC: 1 AN: 62682

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 33194

Middle Eastern (MID) AF: 0.00123 AC: 3 AN: 2444

European-Non Finnish (NFE) AF: 0.0000821 AC: 26 AN: 316792

Other (OTH) AF: 0.0000658 AC: 2 AN: 30414

GnomAD4 genome AF: 0.0000788 AC: 12 AN: 152334 Hom.: 0 Cov.: 34 AF XY: 0.0000671 AC XY: 5 AN XY: 74502

African (AFR) AF: 0.0000240 AC: 1 AN: 41586

American (AMR) AF: 0.00 AC: 0 AN: 15308

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000147 AC: 10 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2108

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000491

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

Submissions by phenotype

Metaphyseal chondrodysplasia, McKusick type Uncertain:1

Nov 11, 2019

Natera, Inc.

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

Anauxetic dysplasia Uncertain:1

Sep 07, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

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 (rs530883024, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with RMRP-related conditions. ClinVar contains an entry for this variant (Variation ID: 465212). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.17
CADD	Benign	19
DANN	Benign	0.82
PhyloP100		7.2
PromoterAI		-0.037	Neutral

Splicing

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

Other links and lift over

dbSNP: rs530883024; hg19: chr9-35657950;