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5-aza-4'-Thio-2'-Deoxycytidine (Aza-TdC) in People With Advanced Solid Tumors

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ClinicalTrials.gov Identifier: NCT03366116
Recruitment Status : Recruiting
First Posted : December 8, 2017
Last Update Posted : November 19, 2018
Sponsor:
Information provided by (Responsible Party):
National Institutes of Health Clinical Center (CC) ( National Cancer Institute (NCI) )

December 7, 2017
December 8, 2017
November 19, 2018
November 5, 2018
September 23, 2021   (Final data collection date for primary outcome measure)
To determine the safety, tolerability, and MTD of oral aza-TdCydadministered daily for 5 days a week for 2 weeks, with one week off, in 21-day cycles [ Time Frame: Cycle 1 ]
To determine the safety, tolerability, and MTD of oral aza-TdCadministered daily for 5 days a week for 2 weeks, with one week off, in 21-day cycles
To determine the safety, tolerability, and MTD of oral aza-TdCydadministered daily for 5 days a week for 2 weeks, with one week off, in 21-day cycles [ Time Frame: Cycle 1 ]
Complete list of historical versions of study NCT03366116 on ClinicalTrials.gov Archive Site
  • To determine the pharmacokinetics of oral aza-TdCyd [ Time Frame: Cycle 1 ]
    To determine the pharmacokinetics of oral aza-TdC
  • To document preliminary evidence of aza-TdCyd activity [ Time Frame: Cycle 1 and 2 ]
    To document preliminary evidence of aza-TdC activity
  • To determine effect of study treatment on re-expression of selectgenes silenced by methylation in circulating tumor cells [ Time Frame: Cycle 1 and 2 ]
    To determine effect of study treatment on re-expression of selectgenes silenced by methylation in circulating tumor cells
  • To determine the pharmacokinetics of oral aza-TdCyd [ Time Frame: Cycle 1 ]
  • To document preliminary evidence of aza-TdCyd activity [ Time Frame: Cycle 1 and 2 ]
  • To determine effect of study treatment on re-expression of selectgenes silenced by methylation in circulating tumor cells [ Time Frame: Cycle 1 and 2 ]
Not Provided
Not Provided
 
5-aza-4'-Thio-2'-Deoxycytidine (Aza-TdC) in People With Advanced Solid Tumors
Phase I Trial of 5-aza-4'-Thio-2'-Deoxycytidine (Aza-TdC) in Patients With Advanced Solid Tumors

Background:

Blood, tissue, and tumor cells contain genes. Genes are made up of DNA. DNA is the instruction book for each cell. In some people with cancer, the genes that might have slowed the growth of their tumor were turned off. Researchers want to see if a new drug can turn the genes back on and slow the tumor growth. The drug is called Aza-TdC.

Objective:

To test the safety of Aza-TdC, and to find out the dose of this drug that can be safely given to humans.

Eligibility:

People ages 18 and older who have advanced cancer that has gotten worse after standard treatment, or for which no effective therapy exists

Design:

Participants will be screened with:

Medical history

Blood and urine tests

Scans to measure their tumors

Test to measure the electrical activity of the heart

Participants will take the study drug by mouth. The drug is given in cycles. Each cycle is 21 days (3 weeks) long.

Week 1 and week 2: participants will take the study drug once a day for 5 days. Then they will have 2 days without the drug. Week 3: no study drug is taken. This completes one cycle of treatment.

For cycle 1, participants will repeat the screening tests several times. For all other cycles, participants will have blood tests and pregnancy tests. They will have scans of their tumor every 6 weeks.

The cycle will be repeated as long as the participant tolerates the drug and the cancer is either stable or gets better.

Sponsoring Institute: National Cancer Institute

Background

  • Methylation-mediated silencing of genes is an epigenetic mechanism implicated in carcinogenesis; agents that inhibit this mechanism are of clinical interest because of their potential to re-activate silenced tumor suppressor genes. Two DNA hypomethylating nucleosides, 5-azacytidine (azacytidine) and 5-aza-2'-deoxycytidine (decitabine) have been approved by the FDA for the treatment of patients with myelodysplastic syndromes and certain leukemias.
  • The nucleoside analog 5-aza-4 -thio-2 -deoxycytidine (Aza-TdC) is incorporated into DNA, where it engages the active site of DNA methyltransferase I (DNMT1), a maintenance methyltransferase that contributes to the hypermethylation and silencing of tumor suppressor genes. DNMT1 can become trapped in a covalent complex with DNA, thus depleting free enzyme and inhibiting the normal maintenance methylation of CpG sites, resulting in re-activation of tumor suppressor genes.
  • Data suggest a correlation between Aza-TdC activity in solid tumor xenograft models and decreased levels of DNMT1.
  • Aza-TdC offers an improvement over traditional DNA methyltransferase inhibitors by virtue of a higher incorporation rate into DNA at lower levels of cytotoxicity; Aza-TdC has greater antitumor activity than another recently developed DNMT1 inhibitor, TdCyd, in some solid tumor xenograft models. Treatment with Aza-TdC is anticipated to result in the inhibition of tumor growth due to DNMT1 depletion at oral doses that are well tolerated in extended dosing schedules.

Primary Objective:

-To establish the safety, tolerability, and MTD of oral Aza-TdC administered daily for 5 days a week for 2 weeks, with one week off, q 21-day cycles, to patients with refractory solid tumors

Secondary Objectives:

  • To determine the pharmacokinetics of oral Aza-TdC
  • To document preliminary evidence of Aza-TdC activity
  • To determine effect of study treatment on re-expression of select genes silenced by methylation in circulating tumor cells

Eligibility:

-Patients greater than or equal to 18 years of age must have histologically documented solid tumors whose disease has progressed on standard therapy or for which there is no available standard therapy

Study Design:

  • Aza-TdC will be administered orally once a day for 5 days of each week for 2 weeks, with one week off, in 21-day cycles.
  • The trial will follow an accelerated titration design, changing to a traditional 3+3 dose escalation design (3-6 patients per cohort) once specified toxicity criteria are met. Intrapatient dose escalation will be allowed.
  • Blood samples will be obtained for pharmacokinetic analysis and to isolate circulating tumor cells to assess re-expression of genes silenced by methylation.
Interventional
Phase 1
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
  • Neoplasms
  • Solid Tumors
Drug: aza-TdCyd
Methylation-mediated silencing of genes is an epigenetic mechanism implicated in carcinogenesis; agents that inhibit this mechanism are of clinical interest because of their potential to re-activate silenced tumor suppressor genes. The nucleoside analog 5-aza-4'-thio-2'- deoxycytidine (aza-TdCyd) is incorporated into DNA, where it engages the active site of DNA methyltransferase I (DNMT1), a maintenance methyltransferase that contributes to hypermethylation and silencing of tumor suppressor genes. Aza-TdCyd offers an improvement over traditional DNMT inhibitors via higher incorporation into DNA and lower cytotoxicity; aza-TdCyd has greater antitumor activity than another recently developed DNMT1 inhibitor, TdCyd, in some solid tumor xenograft models. Treatment with aza-TdCyd is anticipated to yield inhibition of tumor growth due to DNMT1 depletion at oral doses that are well tolerated in extended dosing schedules.
Experimental: 1
Aza-TdCyd will be administered orally once a day for 5 days of each week for 2 weeks, with one week off, in 21-day cycles
Intervention: Drug: aza-TdCyd

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruiting
46
Same as current
September 23, 2021
September 23, 2021   (Final data collection date for primary outcome measure)
  • INCLUSION CRITERIA:
  • Patients must have histologically documented solid tumors whose disease has progressed on standard therapy or for which there is no available standard therapy.
  • Age greater than or equal to 18 years of age.
  • ECOG performance status < 2
  • Patients must have normal organ and marrow function as defined below:

    • absolute neutrophil count greater or equal to1,500/mcL
    • platelets greater than or equal to100,000/mcL
    • total bilirubin less than or equal to 1.5 X institutional upper limit of normal
    • AST(SGOT)/ALT(SGPT) less than or equal to 3 X institutional upper limit of normal

OR

  • AST(SGOT)/ALT(SGPT) less than or equal to 5 X institutional upper limit of normal for patients with liver metastases
  • creatinine less than or equal to 1.5X institutional upper limit of normal

OR

--creatinine clearance greater than or equal to 60 mL/min/1.73 m2 for patients with creatinine levels above 1.5X institutional normal

  • Because nucleoside analogs are known to be teratogenic, women of child-bearing potential and men must agree to use two forms of contraception (hormonal or barrier method of birth control; abstinence; sterilization) prior to study entry, for the duration of study participation, and for 3 months after completing study treatment. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately. Men treated or enrolled on this protocol must also agree to use two forms of contraception prior to the study, for the duration of study participation, and for 3 months after completion of administration of Aza-TdC.
  • Patients must have completed any chemotherapy, radiation therapy, or biologic therapy greater than or equal to 4 weeks or 5 half-lives (whichever is shorter) (6 weeks for nitrosoureas or mitomycin C) prior to entering the study. Patients must be greater than or equal to 2 weeks since any prior palliative radiation or cyberknife therapy. Patients must have recovered to grade 1 from prior toxicity or adverse events. Patients with bone metastases or hypercalcemia on intravenous bisphosphonate treatment prior to study entry may continue this treatment.
  • Ability to understand and the willingness to sign a written informed consent document.
  • Willingness to provide blood and urine samples for research purposes.
  • Ability to swallow pills/capsules.
  • Left ventricular ejection fraction greater than 45% or the institutional lower limit of normal by either ECHO or MUGA at entry.

EXCLUSION CRITERIA:

  • Patients who are receiving any other investigational agents.
  • Pregnant women and women who are breastfeeding are excluded from this study.
  • Patients with clinically significant illnesses which would compromise participation in the study, including, but not limited to active or uncontrolled infection, immune deficiencies, known HIV infection requiring protease inhibitor therapy, known Hepatitis B, known Hepatitis C, uncontrolled diabetes, uncontrolled hypertension, symptomatic congestive heart failure, unstable angina pectoris, myocardial infarction within the past 6 months, uncontrolled cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
  • Patients with known brain metastases or carcinomatous meningitis are excluded from this clinical trial, with the exception of patients whose brain metastatic disease status has remained stable for greater than or equal to 1 month after treatment of the brain metastases.

Patients should not be on anti-seizure medications. These patients may be enrolled at the discretion of the Principal Investigator.

-Malabsorption syndrome or other conditions that would interfere with intestinal absorption.

INCLUSION OF WOMEN AND MINORITIES:

Both men and women of all races and ethnic groups are eligible for this trial.

Sexes Eligible for Study: All
18 Years to 120 Years   (Adult, Older Adult)
No
Contact: Ashley B Bruns (240) 858-3162 ashley.bruns@nih.gov
United States
 
 
NCT03366116
180014
18-C-0014
Not Provided
Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Not Provided
National Institutes of Health Clinical Center (CC) ( National Cancer Institute (NCI) )
National Cancer Institute (NCI)
Not Provided
Principal Investigator: James H Doroshow, M.D. National Cancer Institute (NCI)
National Institutes of Health Clinical Center (CC)
November 14, 2018

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP