A new DRUG TRIALS SNAPSHOT is now available.
Drug Trials Snapshots: PIFELTRO
HOW TO USE THIS SNAPSHOT
The information provided in Snapshots highlights who participated in the clinical trials that supported the FDA approval of this drug, and whether there were differences among sex, race and age groups. The “MORE INFO” bar shows more detailed, technical content for each section. The Snapshot is intended as one tool for consumers to use when discussing the risks and benefits of the drugs.
The information provided in Snapshots highlights who participated in the clinical trials that supported the FDA approval of this drug, and whether there were differences among sex, race and age groups. The “MORE INFO” bar shows more detailed, technical content for each section. The Snapshot is intended as one tool for consumers to use when discussing the risks and benefits of the drugs.
LIMITATIONS OF THIS SNAPSHOT:
Do not rely on Snapshots to make decisions regarding medical care. Always speak to your health provider about the risks and benefits of a drug. Refer to the PIFELTRO Prescribing Information for complete information.
Do not rely on Snapshots to make decisions regarding medical care. Always speak to your health provider about the risks and benefits of a drug. Refer to the PIFELTRO Prescribing Information for complete information.
PIFELTRO (doravirine)
pih-FEL-tro
Merck Sharp & Dohme Corp.
Approval date: August 30, 2018
pih-FEL-tro
Merck Sharp & Dohme Corp.
Approval date: August 30, 2018
DRUG TRIALS SNAPSHOT SUMMARY:
What is the drug for?
PIFELTRO is a drug for the treatment of human immunodeficiency virus-1 (HIV-1) infection in adults who have not taken HIV-1 medicines before.
HIV-1 is the virus that causes acquired immune deficiency syndrome (AIDS).
How is this drug used?
PIFELTRO is a tablet that is taken by mouth once a day in combination with other drugs approved for the treatment of HIV-1 infection.
Use of PIFELTRO with some common medicines is prohibited because of interactions that affect PILFETRO’s benefit.
What are the benefits of this drug?
PIFELTRO reduced viral load of HIV-1 and is comparable to other approved drugs for treatment of HIV-1 infection.
Were there any differences in how well the drug worked in clinical trials among sex, race and age?
- Sex: PIFELTRO worked similarly in men and women.
- Race: PIFELTRO worked similarly in all races.
- Age: The majority of patients in the trials were below 65 years of age. Differences in how well PIFELTRO worked between those below and above 65 years of age could not be determined.
What are the possible side effects?
PIFELTRO may cause a serious condition called immune reconstitution syndrome, similar to other approved drugs for treatment of HIV-1 infection. This condition can happen at the beginning of HIV-1 treatment when the immune system may get stronger and begin to fight infections that have been hidden in the body for a long time.
The most common side effects associated with PIFELTRO are nausea, dizziness, headache, fatigue, diarrhea, abdominal pain, and abnormal dreams.
Were there any differences in side effects among sex, race and age?
- Sex: The risk of side effects was similar in men and women.
- Race: The risk of side effects was similar in all races.
- Age: The majority of patients in the trials were below 65 years of age. Differences in the risk of side effects between those below and above 65 years of age could not be determined.
WHO WAS IN THE CLINICAL TRIALS?
Who participated in the clinical trials?
The FDA approved PIFELTRO based primarily on evidence from 2 clinical trials (Trial 1/ NCT02275780 and Trial 2/NCT02403674) of 1,494 adults with HIV-1 infection who have not received any prior treatments for the infection.
Trials were conducted in the United States,Canada, Europe, Asia, Africa and Latin America.
Figure 1 summarizes how many men and women were in the clinical trials.
Figure 1. Baseline Demographics by Sex
FDA Review
Figure 2 and Table 1 summarize the percentage of patients by race in the clinical trials.
Figure 2. Baseline Demographics by Race
FDA Review
Table 1. Baseline Demographics by Race
| Race | Number of Patients | Percentage of Patients |
|---|---|---|
| White | 907 | 61 |
| Black or African American | 309 | 21 |
| Asian | 138 | 9 |
| American Indian or Alaska Native | 22 | 1 |
| Native Hawaiian or Other Pacific Islander | 3 | less than 1 |
| Other | 115 | 7 |
FDA Review
Figure 3 summarizes patients by age in the clinical trials.
Figure 3. Baseline Demographics by Age
FDA Review
How were the trials designed?
PIFELTRO was evaluated in two clinical trials of adults with HIV-1 infection who have not taken medicines to treat the infection before. Both trials compared PIFELTRO to other medicines for HIV-1 infection.
In Trial 1, patients were randomized to either PIFELTRO once daily or darunavir + ritonavir once daily. Both groups also received either emtricitabine/ tenofovir disoproxil fumarate or abacavir/lamivudine based on the investigator’s decision.
In Trial 2, patients were randomized to either fixed combination of PIFELTRO/ lamivudine / tenofovir disoproxil fumarate (called DELSTRIGO)* or efavirenez/ emtricitabine / tenofovir disoproxil fumarate once daily.
The benefit of PIFELTRO was assessed 48 weeks later by comparing it to other medicines. The measure of benefit was a proportion of patients who decreased the HIV-1 viral load in the blood to less than 50 copies/mL.
*DELSTRIGO was developed as a complete regimen for the treatment of HIV-1 infection.
GLOSSARY
CLINICAL TRIAL: Voluntary research studies conducted in people and designed to answer specific questions about the safety or effectiveness of drugs, vaccines, other therapies, or new ways of using existing treatments.
COMPARATOR: A previously available treatment or placebo used in clinical trials that is compared to the actual drug being tested.
EFFICACY: How well the drug achieves the desired response when it is taken as described in a controlled clinical setting, such as during a clinical trial.
PLACEBO: An inactive substance or “sugar pill” that looks the same as, and is given the same way as, an active drug or treatment being tested. The effects of the active drug or treatment are compared to the effects of the placebo.
SUBGROUP: A subset of the population studied in a clinical trial. Demographic subsets include sex, race, and age groups.
COMPARATOR: A previously available treatment or placebo used in clinical trials that is compared to the actual drug being tested.
EFFICACY: How well the drug achieves the desired response when it is taken as described in a controlled clinical setting, such as during a clinical trial.
PLACEBO: An inactive substance or “sugar pill” that looks the same as, and is given the same way as, an active drug or treatment being tested. The effects of the active drug or treatment are compared to the effects of the placebo.
SUBGROUP: A subset of the population studied in a clinical trial. Demographic subsets include sex, race, and age groups.
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