Trial | NCT00757250  Report issue

Title

Safety Study of TXA127 to Elevate CD4+ T-Lymphocyte Counts in HIV-Infected Patients on Stable HAART Therapy
A Phase I Evaluation of the Safety and Biologic Activity of TXA127 in HIV-Infected Subjects With CD4+ T-Lymphocyte Counts Less Than 250 Per mm3 Who Have Responded to HAART

  • Phase

    Phase 1

  • Study Type

    Interventional

  • Status

    Terminated

  • Study Participants

    13
The purpose of this study is to test the safety of an investigational medication, TXA127, and its ability to increase T-lymphocyte counts, specifically CD4+ T-lymphocytes, in persons infected with human immunodeficiency virus who are taking highly active anti-retroviral therapy.
This is a Phase I, single institution, open-label, within-dosing-cohort-schedule randomized, dose escalation study of TXA127 in HIV-infected subjects with CD4+ T-lymphocyte counts less than 250 per mm3 who have responded to highly active retroviral therapy (HAART). The study has been designed to determine the maximum tolerated dose (MTD) of TXA127 in this subject population. This study will also obtain safety and biologic activity information about the subcutaneous injection of TXA127.

Five escalating dosing cohorts will be examined to determine the MTD. The first four dosing cohorts will receive 50, 100, 200 and 300 mcg/kg of TXA127 by subcutaneous injection daily for 14 days, followed by 14 days without treatment. These 28 days will be defined as one cycle. The cycle of therapy will be repeated once, for a total of two courses of treatment. The 5th dosing cohort will receive 300 mcg/kg of TXA127 by subcutaneous injection daily for 28 days, then 14 days without treatment followed by an additional 28 days of TXA127 administration. Dose escalation to the next cohort of subjects will be permitted to the next higher dosing level provided the following criteria have been met.

A standard Simon Phase I dose escalation trial has been proposed. The MTD will have been exceeded if the proportion of subjects that develops the same or similar study-drug-related, DLT in an assigned dosing schedule equals 2/2, 2/3, 2/4, 2/5, and 2/6 subjects. The MTD is defined as the largest dose that <2 of 6 subjects experiences a DLT. Dose-limiting toxicity is defined as a study-drug-related grade 3 or 4 adverse event (AE).
Study Started
Sep 30
2008
Primary Completion
Dec 31
2011
Study Completion
Dec 31
2011
Last Update
Feb 29
2012
Estimate

Drug Angiotensin 1-7

Once daily subcutaneous injection of 50, 100, 200 or 300 mcg/kg/day

  • Other names: TXA127

1 Experimental

Dose Cohort 1: 50 mcg/kg/day of TXA127

2 Experimental

Drug Cohort 2: 100 mcg/kg/day TXA127

3 Experimental

Drug Cohort 3: 200 mcg/kg/day TXA127

4 Experimental

Drug Cohort 4: 300 mcg/kg/day TXA127

5 Experimental

Extended dosing cohort at 300mcg/kg TXA127 for 2 x 28-day treatment cycles, with an extended follow-up period to week 34.

Criteria 

Inclusion Criteria:

HIV-infected males or non-pregnant, non-breast-feeding females who are >= 18 years of age;
CD4+ T-lymphocyte count less than 250 per mm3;
Successful response to HAART (defined as an HIV RNA viral load of <50 copies per mL) for a minimum of one year preceding study enrollment.

Exclusion Criteria:

Opportunistic infection within the 6 months prior to study enrollment
Active tuberculosis or other mycobacterial infection
Uncontrolled high blood pressure or congestive heart failure class III or IV
Systemic glucocorticoid or immunomodulator therapy within 30 days of study entry
Prior history of Kaposi's sarcoma
Prior history of lymphoma
Active substance abuse within the last 30 days
Uncontrolled psychiatric disorders, including depression
Abnormal or inadequate liver or renal function
Inadequate bone marrow function
No Results Posted