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(Ro 24-2027) A Randomized, Double-Blind, Comparative Study of Dideoxycytidine (ddC) Versus Zidovudine (AZT) in Patients With AIDS or Advanced ARC

This study has been completed.
Sponsor:
Collaborator:
Hoffmann-La Roche
Information provided by:
National Institute of Allergy and Infectious Diseases (NIAID)
ClinicalTrials.gov Identifier:
NCT00000679
First received: November 2, 1999
Last updated: March 11, 2011
Last verified: December 1994
  Purpose

To show that zalcitabine (dideoxycytidine; ddC) is at least as effective as zidovudine (AZT) in the treatment of AIDS or advanced AIDS related complex (ARC), and also that ddC shows a different safety profile than AZT.

In clinical studies, ddC shows antiviral activity. Because of the antiviral activity, and because of the low incidence of mild, reversible neurotoxicity and absence of blood-related toxicity with low dose ddC therapy, a long-term Phase II/III study comparing ddC to AZT in patients with AIDS or advanced ARC is now warranted.


Condition Intervention Phase
HIV Infections
Drug: Zidovudine
Drug: Zalcitabine
Phase 2

Study Type: Interventional
Study Design: Masking: Double-Blind
Primary Purpose: Treatment
Official Title: (Ro 24-2027) A Randomized, Double-Blind, Comparative Study of Dideoxycytidine (ddC) Versus Zidovudine (AZT) in Patients With AIDS or Advanced ARC

Resource links provided by NLM:


Further study details as provided by National Institute of Allergy and Infectious Diseases (NIAID):

Estimated Enrollment: 600
Primary Completion Date: February 1994 (Final data collection date for primary outcome measure)
Detailed Description:

In clinical studies, ddC shows antiviral activity. Because of the antiviral activity, and because of the low incidence of mild, reversible neurotoxicity and absence of blood-related toxicity with low dose ddC therapy, a long-term Phase II/III study comparing ddC to AZT in patients with AIDS or advanced ARC is now warranted.

After screening, physical examination and laboratory tests (within 14 days of entry) patients are randomized to one of two treatment groups. They receive either ddC plus an AZT placebo or AZT plus a ddC placebo. Because it is a blinded study, patients do not know which group they are in. Patients are evaluated weekly for the first 10 weeks and then biweekly thereafter.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria

Concurrent Medication:

Allowed:

  • Aerosolized pentamidine (300 mg once every 4 weeks) for Pneumocystis carinii pneumonia (PCP) prophylaxis.
  • Neuroleptics, benzodiazepines, or antidepressants if patient has been stable with chronic treatment > 1 month.
  • Low dose benzodiazepines or low dose antidepressants.
  • Drugs that are unlikely to cause increased toxicity with either study drug and are unlikely to cause peripheral neuropathy.
  • Drugs with little nephrotoxicity, hepatotoxicity, or cytotoxicity that the patient has been taking and tolerating well.
  • Acyclovir (up to 600 mg/kg/day) for up to 21 days.
  • Ketoconazole (up to 400 mg/day) Nystatin.
  • Low-dose acetaminophen or nonsteroidal anti-inflammatory agents.
  • Isoniazid if patient has no evidence of peripheral neuropathy at entry and if patient takes 50 mg/day pyridoxine concomitantly with isoniazid.
  • Allowed with interruption of study medication for up to 21 days per episode and for a total of 42 days for the study:
  • Drugs that could cause serious additive toxicity when coadministered with either study medication for treatment of an acute intercurrent illness or opportunistic infection, including:
  • Acyclovir (< 600 mg/day), fluconazole, systemic pentamidine, foscarnet, pyrimethamine, triple sulfa, ansamycin, ganciclovir, trimethoprim / sulfamethoxazole.

Patients must have a diagnosis of AIDS or advanced AIDS related complex (ARC). At least 20 percent of the patients must have a consistently positive serum HIV p24 antigen (= or > 70 pg/ml) as defined by the Abbott HIV antigen test, on two separate occasions at least 72 hours apart.

  • Patients found at screening to have a temperature > 38.5 degrees C should be evaluated for the possibility of an occult opportunistic or bacterial infection or neoplasm. If this complete evaluation reveals an infection, they can be entered. If this evaluation is unrevealing, they may be entered after evaluation is completed but while mycobacterial cultures are still pending. Patients with a history of unexplained temperatures > 38.5 degrees C should be evaluated as above and/or be afebrile (temperature < 38.0 degrees C) for 2 weeks prior to study entry.
  • Allowed: Kaposi's sarcoma not specifically excluded, basal cell carcinoma of the skin or in situ carcinoma of the cervix.
  • Current positive venereal disease research label (VDRL) and fluorescent treponemal antibody (FTA) if treated as for asymptomatic neurosyphilis.

Prior Medication:

Allowed:

  • Drugs that cause peripheral neuropathy and drugs that could cause significant increased toxicity with zidovudine (AZT) or dideoxycytidine (ddC) including experimental drugs if therapy with these drugs is completed and patient is stable for 14 days.

Exclusion Criteria

Co-existing Condition:

Patients with the following conditions or symptoms are excluded:

  • Active AIDS defining opportunistic infection or other active intercurrent illness is excluded if ongoing treatment requires the use of excluded concomitant medication.
  • Patients with symptomatic visceral Kaposi's sarcoma (KS), progression of KS within the month prior to entry into the study, or with current neoplasms not specifically allowed.
  • Severe AIDS dementia complex defined by a score of < 23 on the Mini-Mental State Exam.
  • Signs, symptoms, or history of peripheral neuropathy.
  • Significant cardiac disease, defined as history of ventricular arrhythmias requiring medication, prior myocardial infarct, or history of angina or ischemia changes on ECG (electrocardiography).
  • Requiring > 2 weeks of acyclovir therapy at > 600 mg/day.
  • Current positive venereal disease research label (VDRL) and fluorescent treponemal antibody (FTA) not specifically allowed.
  • Significant liver disease.

Concurrent Medication:

Excluded:

  • Drugs that cause peripheral neuropathy:
  • chloramphenicol, cisplatinum, iodoquinol, dapsone, phenytoin, disulfiram, ethionamide, glutethimide, gold, hydralazine, ribavirin, metronidazole, vincristine, nitrofurantoin.
  • Drugs that could cause significant increased toxicity with zidovudine (AZT) or dideoxycytidine (ddC), including experimental drugs not specifically allowed.
  • Drugs that could cause seizures or changes in mental status or neurological examination.

Concurrent Treatment:

Excluded:

  • Transfusion dependency.

Patients with the following are excluded:

  • Active AIDS defining opportunistic infection or other active intercurrent illness if ongoing treatment requires use of excluded concomitant medication.
  • Symptomatic visceral Kaposi's sarcoma (KS), progression of KS within the month prior to study entry, or current neoplasms not specifically allowed.
  • Severe AIDS dementia complex defined by a score of < 23 on the Mini-Mental State Exam.
  • Signs, symptoms, or history of peripheral neuropathy.
  • Unwilling or unable to sign informed consent.

Prior Medication:

Excluded:

  • Zidovudine (AZT), dideoxycytidine (ddC), or any other antiretroviral nucleoside analog.
  • Excluded within 90 days of study entry:
  • Any experimental drug including fluconazole, ganciclovir, foscarnet, erythropoietin, or ribavirin.

Excluded within 90 days of study entry:

  • Drugs that have caused significant nephrotoxicity or significant hepatotoxicity.
  • Drugs that could cause peripheral neuropathy including phenytoin, hydralazine, metronidazole, and nitrofurantoin.
  • Systemic corticosteroids or immunomodulators including interferon and interleukin.

Prior Treatment:

Excluded within 30 days of study entry:

  • Radiation therapy.

Active substance or alcohol abuse.

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00000679

  Show 25 Study Locations
Sponsors and Collaborators
Hoffmann-La Roche
  More Information

Additional Information:
Publications:
Bozzette SA, Kanouse D, Berry S, Duan N, Downes-LeGuin T, Hays R, Petinnelli C, Richman DD, Gocke D, Kahn J. Relative effects of ddC or ddI versus ZDV on health status, function and disability in N3300 (ACTG 114) and ACTG 116b/117. Int Conf AIDS. 1992 Jul 19-24;8(1):Mo21 (abstract no MoB 0077)
Remick S, Follansbee S, Olson R, Pollard R, Reiter W, Salgo M. Safety and tolerance of zalcitabine (ddC, HIVID) in a double-blind, comparative trial (ACTG 114; N3300). Int Conf AIDS. 1993 Jun 6-11;9(1):488 (abstract no PO-B26-2115)
Follansbee S, Drew L, Olson R, Pollard R, Relter W, Salgo M. The efficacy of zalcitabine (ddC, HIVID) versus zidovudine (ZDV) as monotherapy in ZDV naive patients with advanced HIV disease: a randomized, double-blind, comparative trial (ACTG 114; N3300). Int Conf AIDS. 1993 Jun 6-11;9(1):487 (abstract no PO-B26-2113)

ClinicalTrials.gov Identifier: NCT00000679     History of Changes
Other Study ID Numbers: ACTG 114, Protocol Number: N3300A, FDA 31A, Study Number: 3-27
Study First Received: November 2, 1999
Last Updated: March 11, 2011
Health Authority: United States: Federal Government

Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
Zalcitabine
Acquired Immunodeficiency Syndrome
AIDS-Related Complex
Zidovudine

Additional relevant MeSH terms:
Acquired Immunodeficiency Syndrome
HIV Infections
Immune System Diseases
Immunologic Deficiency Syndromes
Lentivirus Infections
RNA Virus Infections
Retroviridae Infections
Sexually Transmitted Diseases
Sexually Transmitted Diseases, Viral
Slow Virus Diseases
Virus Diseases
Zalcitabine
Zidovudine
Anti-HIV Agents
Anti-Infective Agents
Anti-Retroviral Agents
Antimetabolites
Antiviral Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Nucleic Acid Synthesis Inhibitors
Pharmacologic Actions
Reverse Transcriptase Inhibitors
Therapeutic Uses

ClinicalTrials.gov processed this record on November 20, 2014