Topical Sirolimus in Patients With Basal Cell Nevus Syndrome and in Healthy Participants

This is an interventional prevention trial for Neoplastic Syndrome focused on measuring basal cell carcinoma of the skin, nevoid basal cell carcinoma syndrome Read More

DISEASE CHARACTERISTICS:

• Patient

  • Confirmed diagnosis of basal cell nevus syndrome (BCNS)

  • Known patched (PTCH) gene mutation

    • Must have full sequence of coding exons with intron/exon junctions in the PTCH gene OR prior genetic testing confirming PTCH mutation by the Yale University DNA Diagnostics Laboratory

• Age- and sex-matched healthy participant (control)

  • Unaffected relative of patient OR normal healthy volunteer with no family history of BCNS or features of BCNS

    • No unrelated healthy participant meeting any of the following clinical criteria for BCNS:

      • Lamellar calcification of the falx cerebri
      • Prior odontogenic keratocyst or any jaw cyst for which a histopathologic diagnosis cannot be ascertained
      • Palmar or plantar pits typical of BCNS
      • More than 3 basal cell carcinomas (BCC) in a lifetime or 1 BCC under the age of 30
      • History of medulloblastoma

    • No unrelated healthy participant with 2 or more of the following features:

      • History of ovarian or cardiac fibroma
      • Mesenteric or pleural cysts
      • Polydactyly
      • Macrocephaly determined after adjustment for height
      • Craniofacial features of BCNS, including cleft palate, frontal bossing, hypertelorism, iris coloboma or other developmental defects of the eye, or coarse facies
      • Vertebral anomalies, including spina bifida occulta outside the lumbar region
      • Bifid or splayed ribs
      • Other radiographic findings, including bridging of the sella turcica, nonlamellar calcification of the falx cerebri, or flame-shaped lucencies in the phalanges = 1-3 BCCs over the age of 30

PATIENT CHARACTERISTICS:

• WBC ≥ 4,000/mm³
• Neutrophil count ≥ 2,000/mm³
• Platelet count ≥ 150,000/mm³
• Hemoglobin ≥ 11.5 g/dL
• Bilirubin 0.3-1.0 mg/dL
• AST 17-59 U/L
• PTT 10-13 seconds OR INR 1.0-1.4
• Creatinine clearance > 50 mL/min
• Cholesterol < 350 mg/dL
• Triglycerides < 400 mg/dL
• Not pregnant or nursing
• Negative pregnancy test
• Fertile participants must use effective contraception for ≥ 1 month before, during, and for ≥ 12 weeks after study treatment
• No active infection
• No alcohol or drug abuse
• No psychiatric disorder or mental deficiency that would preclude study compliance
• No uncontrolled hypertension (i.e., blood pressure > 140/90 mm Hg on > 2 measurements)
• No chronic active infection requiring treatment
• No untreated reactive purified protein derivative of tuberculin (PPD)
• No HIV-1 infection
• No infection requiring antibiotics within the past 30 days
• No other skin disease affecting broad areas of the body, including the region to be treated and biopsied
• No known hepatitis B or C infection (detectable RNA off antiviral therapy)
• No immune deficiency disorder
• No known hypersensitivity to sirolimus or macrolide antibiotics (e.g., erythromycin, azithromycin, or clarithromycin)
• No cancer within the past 5 years except basal cell skin cancer

PRIOR CONCURRENT THERAPY:

• At least 1 month since prior investigational drugs
• No concurrent dietary supplements, including Hypericum perforatum (St. John's wort) or megadose vitamins
• No other concurrent immunosuppressive medications, including corticosteroids
• No concurrent medications known to interfere with sirolimus metabolism
• No concurrent anticoagulants
• No concurrent acetylsalicyclic acid or other drugs affecting platelet function or number
• No routine (i.e., > 2 doses/week) use of nonsteroidal anti-inflammatory drugs

• No drugs or substances that would effect sirolimus blood concentrations, including any of the following:

  • Nicardipine
  • Verapamil
  • Clotrimazole
  • Fluconazole
  • Itraconazole
  • Troleandomycin
  • Cisapride
  • Metoclopramide
  • Clarithromycin
  • Erythromycin
  • Bromocriptine
  • Cimetidine
  • Danazol
  • HIV-protease inhibitors (e.g., ritonavir or indinavir)
  • Phenobarbital
  • Carbamazepine
  • Phenytoin
  • Rifabutin
  • Rifapentine
  • Grapefruit juice
  • Vaccinations (especially live vaccines)