A Phase 1 interventional study of Tenofovir 1% gel and 2% N-9 gel in Rectal Microbicides, sponsored by CONRAD. Completed at 3 sites in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-06-28.
Sponsored by CONRAD · Phase 1, Interventional, and Other
MTN-007 is a Phase 1, randomized, blinded, placebo-controlled safety and acceptability study of vaginally formulated tenofovir 1% gel (a reduced-glycerin formulation), when applied rectally. The primary objective of this study is to assess the safety of vaginally formulated tenofovir 1% gel when applied rectally.
After completing screening and baseline evaluation, eligible participants will be randomized to receive tenofovir 1% gel, 2% nonoxynol-9 gel (N-9) or placebo gel. The study will also include a no treatment arm. There will be 15 participants in each arm.
Participants will return to the clinic, where they will self-administer a single dose of the study gel under observation. Within approximately 30 minutes, lavage, stool, and rectal biopsy specimens will be obtained. After a one-week recovery period, participants will return to the clinic for assessment. If no significant adverse events (AEs) are reported they will begin to self-administer once-daily outpatient doses of the study gel for 7 days. Participants will return to clinic for evaluation and specimen collection after completion of 7 days of daily dosing.
MTN-007 is a Phase 1, randomized, blinded, placebo-controlled safety and acceptability study of vaginally formulated tenofovir 1% gel (a reduced-glycerin formulation), when applied rectally. The primary objective of this study is to assess the safety of vaginally formulated tenofovir 1% gel when applied rectally. This study will also determine whether rectal use of tenofovir 1% gel is associated with rectal mucosal damage using a broad range of immunological safety biomarkers, utilizing N-9 as a positive control, as rectal application of N-9 is known to cause mild but transient mucosal damage. Other secondary objectives include evaluations of the acceptability of rectal administration of tenofovir 1% gel as well as the safety of hydroxyethylcellulose (HEC) placebo gel when applied rectally.
Participants will be randomized to receive a single dose of tenofovir 1% gel, 2% N-9 gel or a placebo gel that is applied by a clinician at the study site. The study will also include a no treatment arm. There will be 15 participants in each arm. Participants will return to the clinic, where they will self-administer a single dose of the study gel under observation. Within approximately 30 minutes, lavage, stool, and rectal biopsy specimens will be obtained. After a one-week recovery period, participants will return to the clinic for assessment. If no significant adverse events (AEs) are reported they will begin to self-administer once-daily outpatient doses of the study gel for 7 days. Participants will return to the clinic for evaluation and specimen collection after completion of 7 days of daily dosing.
Receptive anal intercourse is common among men who have sex with men and there is increasing evidence that heterosexual women in the developed and developing world also practice anal sex. It can therefore be anticipated that once vaginal microbicides are licensed, they will be used in both the vaginal and rectal compartments. As a consequence, there is a need to evaluate both the rectal and vaginal safety profile of candidate microbicides. The Rectal Microbicide Program clinical protocols have therefore been developed to assess the safety and pharmacology of tenofovir 1% gel when used rectally in men and women as well as address critical questions regarding rectal microbicides through exploratory objectives.
CONRAD is the lead sponsor of 39 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
At screening:
Positive for surface antigen \< 10.0 g/dL count less than 100,000/mm3 White blood cell count \< 2,000 cells/mm3 or > 15,000 cells/mm3 For females: calculated less than 60 mL/min by the Cockcroft-Gault formula where creatinine clearance in mL/min (140- age in years) x (weight in kg) x (0.85 for female)/72 x (serum creatinine in mg/dL) For males: calculated creatinine clearance less than 60 mL/min by the Cockcroft-Gault formula where creatinine clearance in mL/min = (140 - age in years) x (weight in kg) x (1 for male)/72 x (serum creatinine in mg/dL) Serum creatinine > 1.3× the site laboratory (ULN) (ALT) and/or aspartate aminotransferase (AST) > 2.5× the site laboratory ULN
+1 glucose or +1 protein on urinalysis (UA) History of bleeding problems
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Postmenopausal
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Creatinine clearance (CrCl)
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Rectal application of 2% N-9 gel
Drug: 2% N-9 gel
Rectal application of HEC placebo gel
Drug: HEC Placebo gel
no intervention
rectal application of Tenofovir 1% gel
Drug: Tenofovir 1% gel
Entire contents of an applicator will be inserted rectally, for a total of 8 doses.
Entire contents of an applicator will be inserted rectally, for a total of 8 doses.
Entire contents of an applicator will be inserted rectally, for a total of 8 doses.
To evaluate the safety of tenofovir 1% gel when applied rectally
Grade 2 or higher AEs as defined by the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, Version 1.0, December 2004 (Clarification dated August 2009) and/or Addenda 1 and 3 (Female Genital and Rectal Grading Tables for Use in Microbicide Studies)
Time frame: Duration of Study
To evaluate the acceptability of tenofovir 1% gel when applied rectally
The proportion of participants who at their Final Clinic Visit report via the acceptability questionnaire that they would be very likely to use the candidate microbicide during receptive anal intercourse
Time frame: Duration of Study
To evaluate the safety of the placebo gel when applied rectally
Grade 2 or higher adverse events in the placebo gel arm, as defined by the Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, Version 1.0, December 2004 (Clarification dated August MTN-007, Version 2.0 xii August 13, 2010 2009) and/or Addenda 1 and 3 (Female Genital and Rectal Grading Tables for Use in Microbicide Studies)
Time frame: Duration of Study
To determine whether use of tenofovir 1% gel is associated with rectal mucosal damage
Changes in the following parameters: * Epithelial sloughing * Intestinal histopathology * Intestinal mucosal mononuclear cell phenotype * Intestinal mucosal cytokine messenger RNA (mRNA) * Intestinal mucosal gene expression arrays * Cytokine profile in rectal secretions * Fecal calprotectin * Microflora
Time frame: Duration of Study
To determine whether use of 2% nonoxynol-9 gel (Gynol-II®) is associated with rectal mucosal damage
Changes in the following parameters: * Epithelial sloughing * Intestinal histopathology * Intestinal mucosal mononuclear cell phenotype * Intestinal mucosal cytokine messenger RNA (mRNA) * Intestinal mucosal gene expression arrays * Cytokine profile in rectal secretions * Fecal calprotectin * Microflora
Time frame: Duration of Study
This study is completed, as verified in Jun 2021. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Studies of the drug tested here: Tenofovir
CONRAD