chr9-35657920-G-GCA

Variant names:

• chr9-35657920-G-GCA
• rs1340624774
• ENST00000363046.2:n.98_99dupTG

Variant summary

Our verdict is Pathogenic. The variant received 14 ACMG points: 14P and 0B. PS3 PM2 PP5_Very_Strong

The NR_003051.4(RMRP):​n.98_99dupTG variant causes a non coding transcript exon change. The variant allele was found at a frequency of 0.0000128 in 548,094 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). ClinVar reports functional evidence for this variant: "SCV000640121: Experimental studies have shown that this variant affects RMRP function (PMID:11207361, 17701897).". The gene RMRP is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.000013 (0 hom.)
• Consequence: RMRP NR_003051.4 non_coding_transcript_exon
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 7.07
• 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: G2P, ClinGen, Myriad Women’s Health, Labcorp Genetics (formerly Invitae)

ACMG classification

Specifications for RMRP are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Pathogenic. The variant received 14 ACMG points.

• PS3: PS3 evidence extracted from ClinVar submissions: SCV000640121: Experimental studies have shown that this variant affects RMRP function (PMID: 11207361, 17701897).
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 9-35657920-G-GCA is Pathogenic according to our data. Variant chr9-35657920-G-GCA is described in ClinVar as Pathogenic. ClinVar VariationId is 465213.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NR_003051.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RMRP	NR_003051.4	MANE Select	n.98_99dupTG		non_coding_transcript_exon	Exon 1 of 1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RMRP	ENST00000363046.2	TSL:6 MANE Select	n.98_99dupTG		non_coding_transcript_exon	Exon 1 of 1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD2 exomes AF: 0.0000153 AC: 2 AN: 130500 AF XY: 0.0000281

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: 0.000250

GnomAD4 exome AF: 0.0000128 AC: 7 AN: 548094 Hom.: 0 Cov.: 0 AF XY: 0.0000135 AC XY: 4 AN XY: 296794

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: 0.00 AC: 0 AN: 62682

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

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2444

European-Non Finnish (NFE) AF: 0.0000189 AC: 6 AN: 316786

Other (OTH) AF: 0.0000329 AC: 1 AN: 30416

GnomAD4 genome Cov.: 34

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.00000756

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
2	-	-	Metaphyseal chondrodysplasia, McKusick type (2)
1	-	-	Anauxetic dysplasia (1)
1	-	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		7.1

Splicing

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

Other links and lift over

dbSNP: rs1340624774; hg19: chr9-35657917;