Johns Hopkins DNA Diagnostic Laboratory

Preimplantation Genetic Diagnosis for Cystic Fibrosis

Please see our PGD test brochure for additional information.

Gene:    CFTR
   
Test:   Three test panels are available:
1. Direct mutation analysis when both parents are Delta F508 carriers.
2. Analysis of linked markers for parents who are carriers of other CFTR mutations
3. A combination of direct analysis and linked markers for couples in which one member carries Delta F508 and the other carries a different mutation.
CPT Codes:
  Call for information   
Sensitivity:   The error rate for PGD is approximately 3%.The PGD program at Johns Hopkins has been through extensive development and validation stages. The main sources of error in PGD (contamination, allele drop-out and preferential amplification) are all addressed and minimized by our protocol and assay design.

The success rate for determining a molecular diagnosis is, as determined after more than 200 single cell assays, is 87%.

Turnaround Time:   Results are reported in 24-36 hours.
   
Cost:   Please call for information
Special Considerations:   Couples must be seen through the Division of Reproductive Endocrinology and Infertility at Johns Hopkins.

For technical information about PGD testing, please contact Barbara Karczeski, MS at 410-955-0483.

For general information about the program or to refer a patient, please contact Cathy Escallon, MS at 410-955-3091.

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