chr6-165416279-A-C

Variant names:

• chr6-165416279-A-C
• rs1554258695
• NM_001385079.1:c.1799T>G

Variant summary

Our verdict is Pathogenic. The variant received 13 ACMG points: 13P and 0B. PM2 PM5 PP3 PP5_Very_Strong

The NM_001385079.1(PDE10A):​c.1799T>G​(p.Phe600Cys) variant causes a missense, splice region 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. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. F600L) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PDE10A NM_001385079.1 missense, splice_region
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: 8.99
• Publications: 0 publications found

Genes affected

PDE10A (HGNC:8772): (phosphodiesterase 10A) The protein encoded by this gene belongs to the cyclic nucleotide phosphodiesterase family. It plays a role in signal transduction by regulating the intracellular concentration of cyclic nucleotides. This protein can hydrolyze both cAMP and cGMP to the corresponding nucleoside 5' monophosphate, but has higher affinity for cAMP, and is more efficient with cAMP as substrate. Alternatively spliced transcript variants have been described for this gene. [provided by RefSeq, Dec 2011]

PDE10A Gene-Disease associations (from GenCC):

• striatal degeneration, autosomal dominant 2

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• dyskinesia, limb and orofacial, infantile-onset

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Genomics England PanelApp, Ambry Genetics
• infantile-onset generalized dyskinesia with orofacial involvement

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• childhood-onset benign chorea with striatal involvement

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 13 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr6-165416280-A-G is described in ClinVar as Pathogenic. ClinVar VariationId is 225635.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.828
• PP5: Variant 6-165416279-A-C is Pathogenic according to our data. Variant chr6-165416279-A-C is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 522607.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PDE10A	NM_001385079.1	c.1799T>G	p.Phe600Cys	missense_variant, splice_region_variant	Exon 12 of 22	ENST00000539869.4	NP_001372008.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PDE10A	ENST00000539869.4	c.1799T>G	p.Phe600Cys	missense_variant, splice_region_variant	Exon 12 of 22	1	NM_001385079.1	ENSP00000438284.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Striatal degeneration, autosomal dominant 2 Pathogenic:1

Jun 11, 2018

Institute of Human Genetics Munich, TUM University Hospital

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Infantile-onset generalized dyskinesia with orofacial involvement Pathogenic:1

Jan 01, 2017

Diagnostics Division, CENTRE FOR DNA FINGERPRINTING AND DIAGNOSTICS

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.39	D
BayesDel_noAF	Pathogenic	0.32
CADD	Pathogenic	30
DANN	Uncertain	0.99
DEOGEN2	Benign	0.13	.;T;.;.;.;D
Eigen	Pathogenic	0.81
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D;D;D;D;D;D
M_CAP	Uncertain	0.14	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D;D
MetaSVM	Uncertain	0.083	D
MutationAssessor	Pathogenic	3.3	.;.;.;.;.;M
PhyloP100		9.0
PrimateAI	Pathogenic	0.83	D
REVEL	Pathogenic	0.68
Polyphen		1.0	.;.;.;.;.;D
MutPred		0.53		.;.;.;.;.;Loss of sheet (P = 0.0104);
MVP		0.73
MPC		2.3
ClinPred		1.0	D
GERP RS		5.0
Varity_R		0.95
gMVP		0.96

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs1554258695; hg19: chr6-165829767;