17-45477899-C-T

Variant names:

• chr17-45477899-C-T
• rs786205055
• NM_014798.3:c.296+1G>A

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_014798.3(PLEKHM1):​c.296+1G>A variant causes a splice donor, intron change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PLEKHM1 NM_014798.3 splice_donor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.71
• Publications: 2 publications found

Genes affected

PLEKHM1 (HGNC:29017): (pleckstrin homology and RUN domain containing M1) The protein encoded by this gene is essential for bone resorption, and may play a critical role in vesicular transport in the osteoclast. Mutations in this gene are associated with autosomal recessive osteopetrosis type 6 (OPTB6). Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Sep 2009]

PLEKHM1 Gene-Disease associations (from GenCC):

• autosomal recessive osteopetrosis 6

  Inheritance: AR Classification: MODERATE, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, ClinGen, Orphanet
• osteopetrosis, autosomal dominant 3

  Inheritance: AD, Unknown Classification: LIMITED Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 17-45477899-C-T is Pathogenic according to our data. Variant chr17-45477899-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 922.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014798.3. 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
	PLEKHM1	NM_014798.3	MANE Select	c.296+1G>A		splice_donor intron	N/A	NP_055613.1	Q9Y4G2
	PLEKHM1	NM_001352825.2		c.296+1G>A		splice_donor intron	N/A	NP_001339754.1	A0A8V8TPW0
	PLEKHM1	NR_027774.2		n.160-2173G>A		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PLEKHM1	ENST00000430334.8	TSL:1 MANE Select	c.296+1G>A		splice_donor intron	N/A	ENSP00000389913.3	Q9Y4G2
	PLEKHM1	ENST00000581448.5	TSL:1	n.296+1G>A		splice_donor intron	N/A	ENSP00000462160.1	J3KRU0
	PLEKHM1	ENST00000446609.7	TSL:5	c.296+1G>A		splice_donor intron	N/A	ENSP00000394344.3	Q9Y4G2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Autosomal recessive osteopetrosis 6 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.40
CADD	Pathogenic	31
DANN	Uncertain	1.0
Eigen	Pathogenic	1.2
Eigen_PC	Pathogenic	1.0
FATHMM_MKL	Pathogenic	0.98	D
PhyloP100		7.7
GERP RS		5.0
Mutation Taster		=2/98	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.94
SpliceAI score (max)		0.96		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.96		Position offset: 1

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

Other links and lift over

dbSNP: rs786205055; hg19: chr17-43555265;