Shprintzen-Goldberg Syndrome via the SKI Gene
Summary and Pricing 
Test Method
Sequencing and CNV Detection via NextGen Sequencing using PG-Select Capture Probes| Test Code | Test Copy Genes | Test CPT Code | Gene CPT Codes Copy CPT Code | Base Price | |
|---|---|---|---|---|---|
| 7293 | SKI | 81479 | 81479,81479 | $990 | Order Options and Pricing |
Pricing Comments
Testing run on PG-select capture probes includes CNV analysis for the gene(s) on the panel but does not permit the optional add on of exome-wide CNV analysis. Any of the NGS platforms allow reflex to other clinically relevant genes, up to whole exome or whole genome sequencing depending upon the base platform selected for the initial test.
An additional 25% charge will be applied to STAT orders. STAT orders are prioritized throughout the testing process.
This test is also offered via a custom panel (click here) on our exome or genome backbone which permits the optional add on of exome-wide CNV or genome-wide SV analysis.
Turnaround Time
3 weeks on average for standard orders or 2 weeks on average for STAT orders.
Please note: Once the testing process begins, an Estimated Report Date (ERD) range will be displayed in the portal. This is the most accurate prediction of when your report will be complete and may differ from the average TAT published on our website. About 85% of our tests will be reported within or before the ERD range. We will notify you of significant delays or holds which will impact the ERD. Learn more about turnaround times here.
Targeted Testing
For ordering sequencing of targeted known variants, go to our Targeted Variants page.
Clinical Features and Genetics
Clinical Features
Shprintzen-Goldberg syndrome (SGS) clinical features overlap with those of Loeys-Dietz syndrome (LDS) and Marfan syndrome (MFS). Affected individuals have pectus excavatum or pectus carinatum, scoliosis, and arachnodactyly. Characteristic facial findings include craniosynostosis, long narrow head, hypertelorism, exophthalmos, downslanting palpebral fissures, low-set ears and high palate. Distinguishing features of SGS from LDS and MFS include hypotonia and intellectual disability. Aortic dilatation and arterial toruosity is less frequent in SGS patients than in LDS and MFS (Carmignac et al. 2012. PubMed ID: 23103230; Doyle et al. 2012. PubMed ID: 23023332; Greally. 1993. PubMed ID: 20301454).
Genetics
Shprintzen-Goldberg syndrome is inherited in an autosomal dominant manner due to pathogenic variants in the SKI gene. SKI protein is a repressor of TGF-beta signaling. Most causative variants reported to date are missense variants that arose de novo (Carmignac et al. 2012. PubMed ID: 23103230; Doyle et al. 2012. PubMed ID: 23023332). An in-frame deletion has also been reported (Doyle et al. 2012. PubMed ID: 23023332). To date, all documented pathogenic variants in SKI reside in the R-SMAD binding domain, which is located in exon 1 (Carmignac et al. 2012. PubMed ID: 23103230; Doyle et al. 2012. PubMed ID: 23023332).
Clinical Sensitivity - Sequencing with CNV PG-Select
Twenty-eight out of 29 individuals with Shprintzen-Goldberg syndrome were found to have a pathogenic variant in SKI (Doyle et al. 2012. PubMed ID: 23023332; Carmignac et al. 2012. PubMed ID: 23103230).
Testing Strategy
This test provides full coverage of all coding exons of the SKI gene, plus ~10 bases of flanking noncoding DNA. We define full coverage as >20X NGS reads or Sanger sequencing.
Indications for Test
Individuals with features consistent with Shprintzen-Golberg syndrome.
Individuals with features consistent with Shprintzen-Golberg syndrome.
Gene
| Official Gene Symbol | OMIM ID |
|---|---|
| SKI | 164780 |
| Inheritance | Abbreviation |
|---|---|
| Autosomal Dominant | AD |
| Autosomal Recessive | AR |
| X-Linked | XL |
| Mitochondrial | MT |
Disease
| Name | Inheritance | OMIM ID |
|---|---|---|
| Shprintzen-Goldberg Syndrome | AD | 182212 |
Citations
Ordering/Specimens
Ordering Options
We offer several options when ordering sequencing tests. For more information on these options, see our Ordering Instructions page. To view available options, click on the Order Options button within the test description.
myPrevent - Online Ordering
- The test can be added to your online orders in the Summary and Pricing section.
- Once the test has been added log in to myPrevent to fill out an online requisition form.
- PGnome sequencing panels can be ordered via the myPrevent portal only at this time.
Requisition Form
- A completed requisition form must accompany all specimens.
- Billing information along with specimen and shipping instructions are within the requisition form.
- All testing must be ordered by a qualified healthcare provider.
For Requisition Forms, visit our Forms page
If ordering a Duo or Trio test, the proband and all comparator samples are required to initiate testing. If we do not receive all required samples for the test ordered within 21 days, we will convert the order to the most effective testing strategy with the samples available. Prior authorization and/or billing in place may be impacted by a change in test code.
Specimen Types
Specimen Requirements and Shipping Details
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ORDER OPTIONS
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2) Select Additional Test Options
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