Published 22/04/2010
Autosomal Dominant Retinitis Pigmentosa NGS panel
Genes
(full coding
region): |
AIPL1, BEST1, CA4, CRX, FSCN2, GUCA1B, IMPDH1, KLHL7, NR2E3, NRL, PRKCG, PRPF3, PRPF6, PRPF8, PRPF31, PRPH2, RDH12, RGR, RHO, ROM1, RP1, RP9, RPE65, SEMA4A, SNRNP200, TOPORS
List of diseases covered by the panel |
| Lab method: |
NGS panel with CNV analysis |
| Specimen requirements: |
2-4 ml of blood with anticoagulant EDTA
1 µg DNA in TE, AE or pure sterile water at 100-250 ng/µl
The A260/A280 ratio should be 1.8-2.0. DNA sample should be run on an agarose gel as a single band, showing no degradation, alongside with a quantitative DNA marker. |
Deletion/duplication analysis
| Genes: |
IMPDH1, PRPF31, RHO, RP1 |
| Specimen requirements: |
2-4 ml of blood with anticoagulant EDTA
1 µg DNA in TE, AE or pure sterile water at 100-250 ng/µl
The A260/A280 ratio should be 1.8-2.0. DNA sample should be run on an agarose gel as a single band, showing no degradation, alongside with a quantitative DNA marker. |
Indications for genetic testing:
- Confirmation of clinical diagnosis
- Testing of individuals in subsequent generations with family history of autosomal dominant retinitis pigmentosa
- Genetic counseling
- Prenatal diagnosis for known familial mutation
Retinitis pigmentosa is an inherited retinal dystrophy caused by the loss of photoreceptors and characterized by retinal pigment deposits visible on fundus examination. Affected individuals first experience night blindness, followed by reduction of the peripheral visual field and, sometimes, loss of central vision late in the course of the disease which eventually leads to blindness after several decades. Signs and symptoms often first appear in childhood, but severe visual problems do not usually develop until early adulthood. In some cases, RP is characterized by cone-rod dystrophy, in which the decrease in visual acuity predominates over loss of the visual field. RP is usually nonsyndromic but there are also many syndromic forms. The main risk factor is a family history of retinitis pigmentosa.
Published 22/04/2010
Leber Congenital Amaurosis
NGS panel
Genes
(full
coding region): |
AIPL1, CABP4, CEP290 (intronic position c.2991+1655A>G included), CRB1, CRX, GDF6, GUCY2D, IMPDH1, IQCB1, KCNJ13, LCA5, LRAT, NMNAT1, OTX2, RD3, RDH12, RPE65, RPGRIP1, SPATA7, TULP1
List of diseases covered by the panel |
| Lab method: |
NGS panel with CNV analysis |
| Specimen requirements: |
2-4 ml of blood with anticoagulant EDTA
1 µg DNA in TE, AE or pure sterile water at 100-250 ng/µl
The A260/A280 ratio should be 1.8-2.0. DNA sample should be run on an agarose gel as a single band, showing no degradation, alongside with a quantitative DNA marker. |
Deletion/duplication analysis
| Genes: |
AIPL1, CEP290, CRB1, CRX, GUCY2D, LCA5, RDH12, RPE65, RPGRIP1 |
| Specimen requirements: |
2-4 ml of blood with anticoagulant EDTA
2 µg DNA in TE, AE or pure sterile water at 100-250 ng/µl
The A260/A280 ratio should be 1.8-2.0. DNA sample should be run on an agarose gel as a single band, showing no degradation, alongside with a quantitative DNA marker. |
Indications for genetic testing:
1. Confirmation of clinical diagnosis
2. Prediction of disease progression
3. Carrier testing for at-risk family members
4. Genetic counseling
5. Prenatal diagnosis for known familial mutation
Leber congenital amaurosis (LCA) is an early-onset and severe retinal dystrophy leading to congenital blindness. It is diagnosed by a severely reduced or absent electroretinogram (ERG) before one year of age. Shortly after birth, patients usually manifest poor fixation, nystagmus, photophobia, and amaurotic pupils. Later, in most patients, a large variety of retinal changes appear, including salt-and-pepper pigmentation, attenuated vessels, and atrophy of the retinal pigment epithelium (RPE). LCA is mostly inherited as an autosomal recessive disorder.
