56 days
Test Updated:
CFTP
CFTR Panel
CFTPS
CFTR Panel Shadow
Cystic Fibrosis Gene Panel
Congenital Absence of the Vas Deferens (CAVD)
CFTR Gene Sequencing
CFTR Deletion
CFTR Duplication
CFTR Sequencing
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Test Overview
For Tier 1, the coding exons and associated, adjacent consensus splice sites of the CFTR gene are amplified using specific primers, and bidirectionally sequenced using a fluorescent method. For Tier 2, MLPA probes hybridize to target all coding-exons of the CFTR gene and are amplified by multiplex PCR. The amplification products are analyzed by capillary electrophoresis and copy numbers for these CFTR targeted regions are generated.
The CFTR Panel is used to detect the presence of CFTR mutations in patients with CFTR-related disorders affecting the respiratory tract, pancreas, sweat glands, intestine, male genital tract, and liver, and for the confirmation of a diagnosis of Cystic Fibrosis in patients who had no mutations detected in a targeted mutation analysis for the 23 CF mutations recommended by ACMG/ACOG but have a clinical presentation consistent with Cystic Fibrosis. CFTR gene Panel testing consists of CFTR full gene sequencing (Tier 1) and if only one or no CFTR mutation is detected, then CFTR gene deletion and duplication analysis (Tier 2) is performed. This assay is also used to confirm a diagnosis of CFTR-related Congenital Absence of the Vas Deferens (CAVD).
Interpretive report provided.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen Requirements
Please note that ordering the Cystic Fibrosis Diagnostic Mutation Detection assay is recommended prior to the CFTR Gene Sequencing assay, especially for patients of Western European ancestry. Collect specimen in a lavender top tube. Send intact specimen within 24 hours if stored at room temperature or within 5 days if stored refrigerated. Include the patient's family history, pedigree, and ethnicity on the test requisition. Obtaining informed consent from the patient prior to genetic testing is strongly recommended. If desired, a UMHS Request and Consent for Genetic Testing form can be obtained from the MMGL Molecular Genetics Laboratory by contacting the MLabs Client Services Center at 800-862-7284 or online at https://mlabs.umich.edu/sites/default/files/2020-01/file/pci-mmgl_infor….
