Overview
A randomized control trial in 20 subjects with sickle cell disease comparing oral THU-decitabine to nicotinamide and in combination (THU, decitabine and nicotinamide).
Description
A randomized control trial comparing oral THU-decitabine to nicotinamide (1:1 randomization), and then comparing the effects of the combination of nicotinamide with THU-decitabine vs either treatment alone. Treatment with each agent alone is for 12 weeks followed by the combination for a further 12 weeks. Patients have the option to enter an extension phase of combination treatment for an additional 24 weeks (total of 48 weeks)
Eligibility
Inclusion Criteria:
- Age 18 years or older.
- Written informed consent provided by the subject before study entry.
- Confirmed sickle cell disease (SCD) as determined by hemoglobin electrophoresis or liquid chromatography.
- Subject is in his/her steady state and not having any acute complication due to SCD (i.e., hospitalization, acute pain, or acute chest syndrome in the past 14 days).
- Weight at least 40kg
- Regular compliance with comprehensive care and previous therapy.
- Symptomatic SCD is defined as having one of following, despite at least 6 months of hydroxyurea therapy, or refuse to take hydroxyurea for personal reasons: fetal hemoglobin <0.5 g/dL, or 3 or more pain episodes per year requiring parenteral narcotics, or 1 or more acute chest syndrome episodes, or Hemoglobin <9 g/dL and absolute reticulocyte count <250,000/mm3.
Exclusion Criteria:
- Inability to give informed consent.
- Experienced severe sepsis or septic shock within the previous 12 weeks.
- Last HU dose was ingested within the previous 4 weeks.
- Currently pregnant or breast-feeding.
- Alanine Aminotransferase (ALT) ≥ 3 times the upper limit of normal or albumin <2.0 mg/dL or direct (conjugated) bilirubin ≥ 1.5 mg/dl.
- Serum creatinine >2.9 mg/dL and calculated creatinine clearance <30 mL/min.
- Platelet count >800 x 109/L.
- Absolute neutrophil count <1.5 x 109/L.
- Female of active childbearing potential who is unwilling to use at least one of the two following forms of birth control: (i) not having heterosexual sexual contact beginning at the screening visit and continuing until 4 weeks after the last dose of decitabine OR (ii) intrauterine device (IUD).
- Sexually active male who is unwilling to use a condom when engaging in any sexual contact with a female with child-bearing potential, beginning at the screening visit and continuing until 4 weeks after taking the last dose of THU and decitabine. This requirement applies also to males who have had a successful vasectomy.
- Altered mental status or recurrent seizures requiring anti-seizure medications.
- Moribund or any concurrent disease (e.g., hepatic, renal, cardiac, metabolic) of such severity that death within 24 weeks is likely.
- Concurrent diagnosis of malignancy including known Myelodysplastic syndrome, leukemia, or an abnormal karyotype.
- New York Heart Association (NYHA) class III/IV status.
- Eastern Co-operative Oncology Group (ECOG) performance status ≥3.
- Participant is on chronic transfusion therapy
- Known history of illicit drug or alcohol abuse within the past 12 months.
- Other experimental or investigational drug therapy in the past 28 days.
- Taking l-glutamine within the last 28 days
- Being positive for HIV infection