Etravirine tablets, in combination with other antiretroviral agents, are indicated for the treatment of human immunodeficiency virus type 1 (HIV-1) infection in antiretroviral treatment-experienced adult patients and pediatric patients 2 years of age and older [see Microbiology (12.4) and Clinical Studies (14) ] . Etravirine is a human immunodeficiency virus type 1 (HIV-1) non-nucleoside reverse transcriptase inhibitor (NNRTI) indicated for treatment of HIV-1 infection in treatment-experienced patients 2 years of age and older.
(1)
Contraindications
None. None.
Warnings and precautions
Severe, potentially life threatening and fatal skin reactions have been reported. This includes cases of Stevens-Johnson syndrome, hypersensitivity reaction, toxic epidermal necrolysis and erythema multiforme. Immediately discontinue treatment if severe hypersensitivity, severe rash or rash with systemic symptoms or liver transaminase elevations develops and monitor clinical status, including liver transaminases closely.
(5.1) Monitor for immune reconstitution syndrome and fat redistribution. (5.3 , 5.4)
5.1Severe Skin and Hypersensitivity Reactions
Severe, potentially life-threatening and fatal skin reactions have been reported. In clinical trials, these include cases of Stevens-Johnson syndrome, toxic epidermal necrolysis and erythema multiforme. Hypersensitivity reactions including Drug Rash with Eosinophilia and Systemic Symptoms (DRESS) have also been reported and were characterized by rash, constitutional findings, and sometimes organ dysfunction, including hepatic failure.
In Phase 3 clinical trials, Grade 3 and 4 rashes were reported in 1.3% of subjects receiving etravirine compared to 0.2% of placebo subjects. A total of 2.2% of HIV-1-infected subjects receiving etravirine discontinued from Phase 3 trials due to rash [see Adverse Reactions (6.1) ] . Rash occurred most commonly during the first 6 weeks of therapy. The incidence of rash was higher in females [see Adverse Reactions (6.1) ] .
Stevens-Johnson syndrome was reported in 1.1% (2/177) of pediatric patients less than 18 years of age receiving etravirine in combination with other HIV-1 antiretroviral agents in an observational study. Discontinue etravirine immediately if signs or symptoms of severe skin reactions or hypersensitivity reactions develop (including, but not limited to, severe rash or rash accompanied by fever, general malaise, fatigue, muscle or joint aches, blisters, oral lesions, conjunctivitis, facial edema, hepatitis, eosinophilia, angioedema).
Clinical status including liver transaminases should be monitored and appropriate therapy initiated. Delay in stopping etravirine treatment after the onset of severe rash may result in a life-threatening reaction.
5.2Risk of Adverse Reactions or Loss of Virologic Response Due to Drug Interactions
The concomitant use of etravirine and other drugs may result in potentially significant drug interactions, some of which may lead to [see Drug Interactions (7.3) ] : Loss of therapeutic effect of concomitant drug or etravirine and possible development of resistance. Possible clinically significant adverse reactions from greater exposures of etravirine or other concomitant drugs. See Table 4 for steps to prevent or manage these possible and known significant drug interactions, including dosing recommendations.
Consider the potential for drug interactions prior to and during etravirine therapy and review concomitant medications during etravirine therapy.
5.3Immune Reconstitution Syndrome
Immune reconstitution syndrome has been reported in patients treated with combination antiretroviral therapy, including etravirine. During the initial phase of combination antiretroviral treatment, patients whose immune system responds may develop an inflammatory response to indolent or residual opportunistic infections (such as Mycobacterium avium infection, cytomegalovirus, Pneumocystis jiroveci pneumonia (PCP) or tuberculosis), which may necessitate further evaluation and treatment.
Autoimmune disorders (such as Graves’ disease, polymyositis, Guillain-Barré syndrome, and autoimmune hepatitis) have also been reported to occur in the setting of immune reconstitution; however, the time to onset is more variable, and can occur many months after initiation of treatment.
5.4Fat Redistribution Redistribution/accumulation
of body fat, including central obesity, dorsocervical fat enlargement (buffalo hump), peripheral wasting, facial wasting, breast enlargement, and “cushingoid appearance” have been observed in patients receiving antiretroviral therapy. The mechanism and long-term consequences of these events are currently unknown. A causal relationship has not been established.
Interactions
Co-administration of etravirine with other drugs can alter the concentrations of other drugs and other drugs may alter the concentrations of etravirine. The potential drug-drug interactions must be considered prior to and during therapy. (7 , 12.3)
7.1Potential for Other Drugs to Affect Etravirine
Etravirine is a substrate of CYP3A, CYP2C9, and CYP2C19. Therefore, co-administration of etravirine with drugs that induce or inhibit CYP3A, CYP2C9, and CYP2C19 may alter the therapeutic effect or adverse reaction profile of etravirine (see Table 4) [see Clinical Pharmacology (12.3) ].
7.2Potential for Etravirine to Affect Other Drugs
Etravirine is an inducer of CYP3A and inhibitor of CYP2C9, CYP2C19 and P-glycoprotein (P-gp). Therefore, co-administration of drugs that are substrates of CYP3A, CYP2C9 and CYP2C19 or are transported by P-gp with etravirine may alter the therapeutic effect or adverse reaction profile of the co-administered drug(s) (see Table 4) [see Clinical Pharmacology (12.3) ].
7.3Significant Drug Interactions Table
4 shows significant drug interactions based on which, alterations in dose or regimen of etravirine and/or co-administered drug may be recommended. Drugs that are not recommended for co-administration with etravirine are also included in Table 4 [see Clinical Pharmacology (12.3) ] . Table 4: Significant Drug Interactions Concomitant Drug Class: Drug Name Effect on Concentration of Etravirine or Concomitant Drug Clinical Comment HIV-antiviral agents: integrase strand inhibitors dolutegravir * ↓ dolutegravir ↔ etravirine Etravirine significantly reduced plasma concentrations of dolutegravir.
Using cross-study comparisons to historical pharmacokinetic data for etravirine, dolutegravir did not appear to affect the pharmacokinetics of etravirine. dolutegravir/darunavir/ritonavir * ↓ dolutegravir ↔ etravirine The effect of etravirine on dolutegravir plasma concentrations was mitigated by co-administration of darunavir/ritonavir or lopinavir/ritonavir, and is expected to be mitigated by atazanavir/ritonavir. dolutegravir/lopinavir/ritonavir * ↔ dolutegravir ↔ etravirine Dolutegravir should only be used with etravirine when co-administered with atazanavir/ritonavir, darunavir/ritonavir, or lopinavir/ritonavir.
HIV-antiviral agents: non-nucleoside reverse transcriptase inhibitors (NNRTIs) efavirenz * nevirapine * ↓ etravirine Combining two NNRTIs has not been shown to be beneficial. Concomitant use of etravirine with efavirenz or nevirapine may cause a significant decrease in the plasma concentrations of etravirine and loss of therapeutic effect of etravirine. Co-administration of etravirine and other NNRTIs is not recommended. delavirdine ↑ etravirine Combining two NNRTIs has not been shown to be beneficial.
Etravirine and delavirdine should not be co-administered. rilpivirine ↓ rilpivirine ↔ etravirine Combining two NNRTIs has not been shown to be beneficial. Co-administration of etravirine and rilpivirine is not recommended. HIV-antiviral agents: protease inhibitors (PIs) atazanavir * (without ritonavir) ↓ atazanavir Co-administration of etravirine and atazanavir without low-dose ritonavir is not recommended. atazanavir/ritonavir * ↓ atazanavir ↔ etravirine Concomitant use of etravirine with atazanavir/ritonavir decreased atazanavir C min but it is not considered clinically relevant.
The mean systemic exposure (AUC) of etravirine after co-administration of etravirine with atazanavir/ritonavir in HIV-infected subjects was similar to the mean systemic exposure of etravirine observed in the Phase 3 trials after co-administration of etravirine and darunavir/ritonavir (as part of the background regimen). Etravirine and atazanavir/ritonavir can be co-administered without dose adjustments. atazanavir/cobicistat ↓ atazanavir ↓ cobicistat Co-administration of etravirine with atazanavir/cobicistat is not recommended because it may result in loss of therapeutic effect and development of resistance to atazanavir. darunavir/ritonavir * ↓ etravirine The mean systemic exposure (AUC) of etravirine was reduced when etravirine was co-administered with darunavir/ritonavir.
Because all subjects in the Phase 3 trials received darunavir/ritonavir as part of the background regimen and etravirine exposures from these trials were determined to be safe and effective, etravirine and darunavir/ritonavir can be co-administered without dose adjustments. darunavir/cobicistat ↓ cobicistat darunavir: effect unknown Co-administration of etravirine with darunavir/cobicistat is not recommended because it may result in loss of therapeutic effect and development of resistance to darunavir. fosamprenavir (without ritonavir) ↑ amprenavir Concomitant use of etravirine with fosamprenavir without low-dose ritonavir may cause a significant alteration in the plasma concentration of amprenavir.
Co-administration of etravirine and fosamprenavir without low-dose ritonavir is not recommended. fosamprenavir/ritonavir* ↑ amprenavir Due to a significant increase in the systemic exposure of amprenavir, the appropriate doses of the combination of etravirine and fosamprenavir/ritonavir have not been established. Co-administration of etravirine and fosamprenavir/ritonavir is not recommended. indinavir * (without ritonavir) ↓ indinavir Concomitant use of etravirine with indinavir without low-dose ritonavir may cause a significant alteration in the plasma concentration of indinavir.
Co-administration of etravirine and indinavir without low-dose ritonavir is not recommended. lopinavir/ritonavir * ↓ etravirine The mean systemic exposure (AUC) of etravirine was reduced after co-administration of etravirine with lopinavir/ritonavir (tablet). Because the reduction in the mean systemic exposures of etravirine in the presence of lopinavir/ritonavir is similar to the reduction in mean systemic exposures of etravirine in the presence of darunavir/ritonavir, etravirine and lopinavir/ritonavir can be co-administered without dose adjustments. nelfinavir (without ritonavir) ↑ nelfinavir Concomitant use of etravirine with nelfinavir without low-dose ritonavir may cause a significant alteration in the plasma concentration of nelfinavir.
Co-administration of etravirine and nelfinavir without low-dose ritonavir is not recommended. ritonavir * ↓ etravirine Concomitant use of etravirine with ritonavir 600 mg twice daily may cause a significant decrease in the plasma concentration of etravirine and loss of therapeutic effect of etravirine. Co-administration of etravirine and ritonavir 600 mg twice daily is not recommended. saquinavir/ritonavir * ↓ etravirine The mean systemic exposure (AUC) of etravirine was reduced when etravirine was co-administered with saquinavir/ritonavir.
Because the reduction in the mean systemic exposures of etravirine in the presence of saquinavir/ritonavir is similar to the reduction in mean systemic exposures of etravirine in the presence of darunavir/ritonavir, etravirine and saquinavir/ritonavir can be co-administered without dose adjustments. tipranavir/ritonavir * ↓ etravirine Concomitant use of etravirine with tipranavir/ritonavir may cause a significant decrease in the plasma concentrations of etravirine and loss of therapeutic effect of etravirine.
Co-administration of etravirine and tipranavir/ritonavir is not recommended. CCR5 antagonists maraviroc * ↔ etravirine ↓ maraviroc When etravirine is co-administered with maraviroc in the absence of a potent CYP3A inhibitor (e.g., ritonavir boosted protease inhibitor), the recommended dose of maraviroc is 600 mg twice daily. No dose adjustment of etravirine is needed. maraviroc/darunavir/ritonavir *† ↔ etravirine ↑ maraviroc When etravirine etravirine is co-administered with maraviroc in the presence of a potent CYP3A inhibitor (e.g., ritonavir boosted protease inhibitor), the recommended dose of maraviroc is 150 mg twice daily.
No dose adjustment of etravirine is needed. Other agents Antiarrhythmics : digoxi
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Pregnancy and breastfeeding
8.1Pregnancy Pregnancy Exposure Registry
There is a pregnancy exposure registry that monitors pregnancy outcomes in individuals exposed to etravirine during pregnancy. Healthcare providers are encouraged to register patients by calling the Antiretroviral Pregnancy Registry (APR) at 1-800-258-4263. Risk Summary Prospective pregnancy data from clinical trials and the APR are not sufficient to adequately assess the risk of major birth defects, miscarriage or adverse maternal or fetal outcomes.
Etravirine use during pregnancy has been evaluated in a limited number of individuals as reported by the APR, and available data show 1 birth defect in 66 first trimester exposures to etravirine-containing regimens (see Data) . The estimated background rate for major birth defects is 2.7% in the U.S. reference population of the Metropolitan Atlanta Congenital Defects Program (MACDP). The rate of miscarriage is not reported in the APR.
The estimated background rate of miscarriage in clinically recognized pregnancies in the U.S. general population is 15% to 20%. The background risk of major birth defects and miscarriage for the indicated population is unknown. In animal reproduction studies, no adverse developmental effects were observed with orally administered etravirine at exposures equivalent to those at the maximum recommended human dose (MRHD) of 400 mg daily (see Data) .
Data Human Data Based on prospective reports to the APR of 116 live births following exposure to etravirine-containing regimens during pregnancy (including 66 exposed in the first trimester and 38 exposed in the second/third trimester), the number of birth defects in live births for etravirine was 1 out of 66 with first trimester exposure and 0 out of 38 with second/third trimester exposure. Prospective reports from the APR of overall major birth defects in pregnancies exposed to etravirine are compared with a U.S. background major birth defect rate.
Methodological limitations of the APR include the use of MACDP as the external comparator group. Limitations of using an external comparator include differences in methodology and populations, as well as confounding due to the underlying disease; these limitations preclude an accurate comparison of outcomes. Etravirine (200 mg twice daily) in combination with other antiretroviral agents was evaluated in a clinical trial enrolling 15 pregnant subjects during the second and third trimesters of pregnancy and postpartum.
Thirteen subjects completed the trial through postpartum period (6 to 12 weeks after delivery). The pharmacokinetic data demonstrated that exposure to total etravirine was generally higher during pregnancy compared with postpartum [see Clinical Pharmacology (12.3) ] . Among subjects who were virologically suppressed (HIV-1 RNA less than 50 copies/mL) at baseline (9/13), virologic suppression was maintained through the third trimester and postpartum period.
Among subjects with HIV-1 RNA greater than 50 copies/mL and less than 400 copies/mL at baseline (3/13), viral loads remained less than 400 copies/mL. In one subject with HIV-1 RNA greater than 1,000 copies/mL at baseline (1/13), HIV-1 RNA remained greater than 1,000 copies/mL during the study period. Thirteen infants were born to 13 HIV-infected pregnant individuals in this study. HIV-1 test results were not available for 2 infants.
Among the eleven infants with HIV-1 test results available, who were born to 11 HIV-infected pregnant individuals who completed the study, all had test results that were negative for HIV-1 at the time of delivery. No unexpected safety findings were observed compared with the known safety profile of etravirine in non-pregnant adults. Animal Data Reproductive and developmental toxicity studies were performed in rats (at 250, 500 and 1,000 mg/kg/day) and rabbits (at 125, 250 and 375 mg/kg/day) administered etravirine on gestation days 6 through 16, and 6 through 19, respectively.
In both species, no treatment-related embryo-fetal effects were observed. In addition, no treatment-related effects were observed in a pre- and postnatal development study performed in rats administered oral doses up to 500 mg/kg/day on gestation days 7 through lactation day 7. The systemic drug exposures achieved at the high dose in these animal studies were equivalent to those at the MRHD.
Adverse reactions
The following adverse reactions are described in greater detail in other sections: Severe skin and hypersensitivity reactions [see Warnings and Precautions (5.1) ] . Immune reconstitution syndrome [see Warnings and Precautions (5.3) ] . The most common adverse drug reactions of moderate to severe intensity (at least 2%) which occurred at a higher rate than placebo in adults are rash and peripheral neuropathy. (6.1) The most common adverse drug reactions in at least 2% of pediatric patients are rash and diarrhea.
(6.1) To report SUSPECTED ADVERSE REACTIONS, contact Amneal Pharmaceuticals LLC at 1-877-835-5472 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
6.1Clinical Trials Experience
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Clinical Trials Experience in Adults The safety assessment is based on all data from 1,203 subjects in the Phase 3 placebo-controlled trials, TMC125-C206 and TMC125-C216, conducted in antiretroviral treatment-experienced HIV-1-infected adult subjects, 599 of whom received etravirine (200 mg twice daily).
In these pooled trials, the median exposure for subjects in the etravirine arm and placebo arm was 52.3 and 51.0 weeks, respectively. Discontinuations due to adverse drug reactions (ADRs) were 5.2% in the etravirine arm and 2.6% in the placebo arm. The most frequently reported ADR at least Grade 2 in severity was rash (10.0%). Stevens-Johnson syndrome, drug hypersensitivity reaction and erythema multiforme were reported in less than 0.1% of subjects during clinical development with etravirine [see Warnings and Precautions (5.1) ] .
A total of 2.2% of HIV-1-infected subjects in Phase 3 trials receiving etravirine discontinued due to rash. In general, in clinical trials, rash was mild to moderate, occurred primarily in the second week of therapy, and was infrequent after Week 4. Rash generally resolved within 1 to 2 weeks on continued therapy. The incidence of rash was higher in women compared to men in the etravirine arm in the Phase 3 trials (rash ≥ Grade 2 was reported in 9/60 [15.0%] women versus 51/539 [9.5%] men; discontinuations due to rash were reported in 3/60 [5.0%] women versus 10/539 [1.9%] men) [see Warnings and Precautions (5.1) ] .
Patients with a history of NNRTI-related rash did not appear to be at increased risk for the development of etravirine-related rash compared to patients without a history of NNRTI-related rash. Common Adverse Reactions Clinical ADRs of moderate intensity or greater (greater than or equal to Grade 2) and reported in at least 2% of subjects treated with etravirine and occurring at a higher rate compared to placebo (excess of 1%) are presented in Table 2.
Laboratory abnormalities considered ADRs are included in Table 3. Table 2: Adverse Drug Reactions (Grades 2 to 4) in at Least 2% of Adult Subjects (Pooled TMC125-C206 and TMC125-C216 Trials) Preferred Term Etravirine + BR N = 599 % Placebo + BR N = 604 % Rash 10% 3% Peripheral neuropathy 4% 2% N = total number of subjects per treatment group; BR = background regimen Less Common Adverse Reactions Treatment-emergent ADRs occurring in less than 2% of subjects (599 subjects) receiving etravirine and of at least moderate intensity (greater than or equal to Grade 2) are listed below by body system: Cardiac Disorders : myocardial infarction, angina pectoris, atrial fibrillation Ear and Labyrinth Disorders : vertigo Eye Disorders : blurred vision Gastrointestinal Disorders : gastroesophageal reflux disease, flatulence, gastritis, abdominal distension, pancreatitis, constipation, dry mouth, hematemesis, retching, stomatitis General Disorders and Administration Site Conditions : sluggishness Hematologic Disorders : hemolytic anemia Hepatobiliary Disorders : hepatic failure, hepatomegaly, cytolytic hepatitis, hepatic steatosis, hepatitis Immune System Disorders : drug hypersensitivity, immune reconstitution syndrome Metabolism and Nutrition Disorders : diabetes mellitus, anorexia, dyslipidemia Nervous System Disorders : paresthesia, somnolence, convulsion, hypoesthesia, amnesia, syncope, disturbance in attention, hypersomnia, tremor Psychiatric Disorders : anxiety, sleep disorders, abnormal dreams, confusional state, disorientation, nervousness, nightmares Renal and Urinary Disorders: acute renal failure Reproductive System and Breast Disorders : gynecomastia Respiratory, Thoracic and Mediastinal Disorders : exertional dyspnea, bronchospasm Skin and Subcutaneous Tissue Disorders : night sweats, lipohypertrophy, prurigo, hyperhidrosis, dry skin, swelling face Additional ADRs of at least moderate intensity observed in other trials were acquired lipodystrophy, angioneurotic edema, erythema multiforme and hemorrhagic stroke, each reported in no more than 0.5% of subjects.
Laboratory Abnormalities in Treatment-Experienced Patients Selected Grade 2 to Grade 4 laboratory abnormalities that represent a worsening from baseline observed in adult subjects treated with etravirine are presented in Table 3. Table 3: Selected Grade 2 to 4 Laboratory Abnormalities Observed in Treatment-Experienced Subjects (Pooled TMC125-C206 and TMC125-C216 Trials) Laboratory Parameter DAIDS Toxicity Range Etravirine + BR N = 599 % Placebo + BR N = 604 % GENERAL BIOCHEMISTRY Pancreatic amylase Grade 2 > 1.5 to 2 x ULN 7% 8% Grade 3 > 2 to 5 x ULN 7% 8% Grade 4 > 5 x ULN 2% 1% Lipase Grade 2 > 1.5 to 3 x ULN 4% 6% Grade 3 > 3 to 5 x ULN 2% 2% Grade 4 > 5 x ULN 1% < 1% Creatinine Grade 2 > 1.4 to 1.8 x ULN 6% 5% Grade 3 > 1.9 to 3.4 x ULN 2% 1% Grade 4 > 3.4 x ULN 0% < 1% HEMATOLOGY Decreased hemoglobin Grade 2 90 g/L to 99 g/L 2% 4% Grade 3 70 g/L to 89 g/L < 1% < 1% Grade 4 < 70 g/L < 1% < 1% White blood cell count Grade 2 1,500 to 1,999/mm 3 2% 3% Grade 3 1,000 to 1,499/mm 3 1% 4% Grade 4 < 1,000/mm 3 1% < 1% Neutrophils Grade 2 750 to 999/mm 3 5% 6% Grade 3 500 to 749/mm 3 4% 4% Grade 4 < 500/mm 3 2% 3% Platelet count Grade 2 50,000 to 99,999/mm 3 3% 5% Grade 3 25,000 to 49,999/mm 3 1% 1% Grade 4 < 25,000/mm 3 < 1% < 1% LIPIDS AND GLUCOSE Total cholesterol Grade 2 > 6.20 to 7.77 mmol/L 240 mg/dL to 300 mg/dL 20% 17% Grade 3 > 7.77 mmol/L > 300 mg/dL 8% 5% Low density lipoprotein Grade 2 4.13 mmol/L to 4.9 mmol/L 160 mg/dL to 190 mg/dL 13% 12% Grade 3 > 4.9 mmol/L > 190 mg/dL 7% 7% Triglycerides Grade 2 5.65 mmol/L to 8.48 mmol/L 500 mg/dL to 750 mg/dL 9% 7% Grade 3 8.49 mmol/L to 13.56 mmol/L 751 mg/dL to 1,200 mg/dL 6% 4% Grade 4 > 13.56 mmol/L > 1200 mg/dL 4% 2% Elevated glucose levels Grade 2 6.95 mmol/L to 13.88 mmol/L 161 mg/dL to 250 mg/dL 15% 13% Grade 3 13.89 mmol/L to 27.75 mmol/L 251 mg/dL to 500 mg/dL 4% 2% Grade 4 > 27.75 mmol/L > 500 mg/dL 0% < 1% HEPATIC PARAMETERS Alanine amino transferase Grade 2 2.6 to 5 x ULN 6% 5% Grade 3 5.1 to 10 x ULN 3% 2% Grade 4 > 10 x ULN 1% < 1% Aspartate amino transferase Grade 2 2.6 to 5 x ULN 6% 8% Grade 3 5.1 to 10 x ULN 3% 2% Grade 4 > 10 x ULN < 1% < 1% ULN = Upper Limit of Normal; BR = background regimen Patients Co-Infected With Hepatitis B and/or Hepatitis C Virus In Phase 3 trials TMC125-C206 and TMC125-C216, 139 subjects (12.3%) with chronic hepatitis B and/or hepatitis C virus co-infection out of 1,129 subjects were permitted to enroll.
AST and ALT abnormalities occurred more frequently in hepatitis B and/or hepatitis C virus co-infected subjects for both treatment groups. Grade 2 or higher laboratory abnormalities that represent a worsening from baseline of AST, ALT or total bilirubin occurred in 27.8%, 25.0% and 7.1% respectively, of etravirine-treated co-infected subjects as compared to 6.7%, 7.5% and 1.8% of non-co-infected etravirine-treated subjects.
In general, adverse events reported by etravirine-treated subjects with hepatitis B and/or hepatitis C virus co-infection were si
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Composition
Active ingredients
ETRAVIRINE 200MG
Strengths and forms
The FDA lists each strength of a product separately; these pages share one label.
Prognia shows this product information for reference and learning. It is not treatment advice and can lag behind the official text. Always check the current product information and local protocols before prescribing.
At a glance
Brand name
Etravirine
Pharmacologic class
Human Immunodeficiency Virus 1 Non-Nucleoside Analog Reverse Transcriptase Inhibitor
