NM_001145860.2:c.2607delC

Variant names:

• chr8-98157799-GC-G
• rs1060505024
• NM_001145860.2:c.2607delC

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PVS1_Strong PM2 PP5

The NM_001145860.2(POP1):​c.2607delC​(p.Glu870SerfsTer5) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: POP1 NM_001145860.2 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 1.93
• Publications: 1 publications found

Genes affected

POP1 (HGNC:30129): (POP1 homolog, ribonuclease P/MRP subunit) This gene encodes the protein subunit of two different small nucleolar ribonucleoprotein complexes: the endoribonuclease for mitochondrial RNA processing complex and the ribonuclease P complex. The encoded protein is a ribonuclease that localizes to the nucleus and functions in pre-RNA processing. This protein is also an autoantigen in patients suffering from connective tissue diseases. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2009]

POP1 Gene-Disease associations (from GenCC):

• anauxetic dysplasia 2

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• anauxetic dysplasia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.152 CDS is truncated, and there are 1 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 8-98157799-GC-G is Pathogenic according to our data. Variant chr8-98157799-GC-G is described in ClinVar as Pathogenic. ClinVar VariationId is 417737.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001145860.2. 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
	POP1	NM_001145860.2	MANE Select	c.2607delC	p.Glu870SerfsTer5	frameshift	Exon 16 of 16	NP_001139332.1	Q99575
	POP1	NM_001145861.2		c.2607delC	p.Glu870SerfsTer5	frameshift	Exon 16 of 16	NP_001139333.1	Q99575
	POP1	NM_015029.3		c.2607delC	p.Glu870SerfsTer5	frameshift	Exon 16 of 16	NP_055844.2	Q99575

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POP1	ENST00000401707.7	TSL:2 MANE Select	c.2607delC	p.Glu870SerfsTer5	frameshift	Exon 16 of 16	ENSP00000385787.2	Q99575
	POP1	ENST00000349693.3	TSL:1	c.2607delC	p.Glu870SerfsTer5	frameshift	Exon 16 of 16	ENSP00000339529.3	Q99575
	POP1	ENST00000916453.1		c.2625delC	p.Glu876SerfsTer5	frameshift	Exon 16 of 16	ENSP00000586512.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Anauxetic dysplasia 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		1.9
Mutation Taster		=1/199	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.24		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.24		Position offset: 33

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

Other links and lift over

dbSNP: rs1060505024; hg19: chr8-99170027;