TMC435

Participants are considered to have reached SVR12 if at the actual end of treatment hepatitis C virus (HCV) ribonucleic acid (RNA) levels \< 25 IU/mL undetectable, AND at the time point of SVR12 (i.e., 12 weeks after the planned end of treatment \[EOT\]), HCV RNA levels \< 25 IU/mL undetectable.

Participants considered to have achieved SVR12 if both conditions are met: 1). the hepatitis C virus ribonucleic acid (HCV RNA) is less than (\<) lower limit of quantification (LLOQ; 25 international unit per milliliter \[IU/mL\]) undetectable at end of treatment and, 2). the HCV RNA is \< LLOQ detectable or undetectable at 12 weeks after the planned end of study drug treatment.

The primary objective is to evaluate the efficacy of TMC435 in combination with pegylated interferon alpha-2a (PegIFNα 2a)/ribavirin (RBV) with respect to the proportion of participants with chronic HCV-4 infection achieving SVR 12 weeks after planned end of treatment (SVR12) in the overall population as well as in the different subpopulations (treatment-naïve, previous relapsers and previous non-responders).

Participants are considered to have reached SVR12 if both conditions below are met: 1) HCV RNA levels less than (\<) 25 International unit per milliliter (IU/mL) undetectable; 2) HCV RNA levels \<25 IU/mL undetectable or HCV RNA levels \<25 IU/mL detectable.

The SVR 12 was defined as hepatitis C virus (HCV) ribonucleic acid (RNA) levels less than (\<) 25 international unit per milliliter (IU/mL) undetectable at the actual end of treatment (EOT), and HCV RNA levels \<25 IU/mL undetectable or HCV RNA levels \<25 IU/mL detectable at 12 Weeks after end of treatment.

The table below shows the percentage of participants in each treatment group with an SVR12 defined as participants with undetectable plasma Hepatitis C virus (HCV) ribonucleic acid (RNA) at the end of treatment (Week 24 or 48) who also had undetectable plasma HCV RNA 12 weeks after the last dose of treatment (Week 36 or 60). NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants in each treatment group with a SVR24 defined as participants with undetectable plasma hepatitis C virus (HCV) ribonucleic acid (RNA) at the end of treatment and at 24 weeks after the last dose of treatment (Week 48 or 72). NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants in each treatment group with undetectable HCV RNA less than 1.2 log10 IU/mL during treatment and at end of treatment (EOT). NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the number of participants in each treatment group who experienced viral breakthrough during the TMC435 treatment period. Viral breakthrough is defined as a confirmed increase of greater than 1 log10 IU/mL in plasma hepatitis C virus (HCV) ribonucleic acid (RNA) level from the lowest level reached or a confirmed value of plasma HCV RNA of greater than 2.0 log10 IU/mL in participants whose plasma HCV RNA level had previously been reported below 1.2 log10 IU/mL detectable or undetectable. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the number of participants in each treatment group who demonstrated viral relapse, defined as having undetectable plasma hepatitis C virus (HCV) ribonucleic acid (RNA) levels at end of treatment (EOT \[Week 24 or 48\]) and detectable HCV RNA during follow-up or detectable HCV RNA at the time points of an assessment of sustained virologic response (SVR). The number of participants analyzed in each treatment group below are those with undetectable HCV RNA levels at EOT and with at least one follow-up HCV RNA measurement. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the number of participants in each treatment group with abnormal ALT levels at Baseline who achieved normalization of ALT levels defined as having an ALT value less than or equal to the Upper Limit of Normality (ie, 40 IU/mL) at EOT. At Baseline, 15 treatment-naïve participants, 13 prior relapsers, and 13 prior non-responders had abnormal ALT levels at Baseline. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants in each treatment group with greater than or equal to 2 log10 IU/mL drop from baseline in plasma hepatitis C virus (HCV) ribonucleic acid (RNA) at each time point during treatment and post-treatment follow-up. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants in each treatment group who met RGT criteria (ie, who had plasma levels of hepatitis C virus ribonucleic acid \[HCV RNA\] \<1.2 log10 IU/mL detectable/undetectable at Week 4 and \<1.2 log 10 IU/mL undetectable at Week 12) and completed treatment with PegIFNα-2b and RBV at Week 24. Participants in the TMC435 Treatment-Naïve and TMC435 Prior Relapser treatment groups not meeting RGT criteria continued treatment with PegIFNα-2a and RBV to Week 48 (does not apply to the TMC435 Non-responder treatment group because the specified treatment duration was 48 weeks and RGT criteria was not assessed at Week 24). NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the median (range) AUC24h values for TMC435 for all participants in each TMC435 treatment group who received TMC435 for up to 12 weeks. "Overall" is the median exposure estimate using all available data for each participant in the study. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the median (range) TMC435 predose plasma concentrations (C0h) and maximum concentration (Cmax) values for participants in each treatment group. "Overall" is the median exposure estimate using all available data for each participant in the study. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants in each treatment group who achieved a SVR12, defined as the percentage of participants with undetectable plasma Hepatitis C virus ribonucleic acid 12 weeks after planned end of treatment.

The table below shows the observed percentage of participants with a SVR12 defined as undetectable plasma hepatitis C virus (HCV) ribonucleic acid (RNA) at EOT (Week 24 or 48) and at 12 weeks after the last dose of treatment (Week 36 or 60).

Participants with hepatitis C virus (HCV) ribonucleic acid (RNA) undetectable at end of treatment and HCV RNA less than (\<) 25 international unit per milliliter (IU/mL) (detectable or undetectable) at 12 weeks after the planned end of treatment.

The table below shows the least-squares (LS) mean change and 95% confidence intervals (CI) change from baseline at Week 4 in HCV RNA levels for participants in the 2 TMC435 50 mg treatment groups combined (TMC12/PR24 50 mg and TMC24/PR24 50 mg) and for participants in the 2 TMC435 100 mg treatment groups combined (TMC12/PR24 100 mg and TMC24/PR24 100 mg). The statistical analyses show the difference in LS mean change from baseline from the PR48 control group and the 95% CI for each dose group (ie, each TMC435 dose group minus PR48 control). NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants in each treatment group with undetectable plasma HCV RNA levels at Weeks 4, 12, 24, 48, and end of treatment (EOT, up to Week 24 or 48). The number of participants analyzed is listed at each time point in order of the treatment groups from left to right in the table (ie, Week x, n=x, x, x, x, and x) if different from the "Number of Participants Analyzed."NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants in each treatment group with a decrease of greater than (\>) or equal (=) to 2 log10 IU/mL from baseline in plasma HCV RNA levels at time points during the treatment period and post treatment follow-up period. The number of participants analyzed is listed at each time point in order of the treatment groups from left to right in the table (ie, Week x, n=x, x, x, x, and x) if different from the "Number of Participants Analyzed." NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants in each treatment group with plasma HCV RNA levels undetectable or below the limit of quantification (\<1.2 log10 IU/mL detectable ) at time points during treatment and post treatment follow-up.The number of participants analyzed is listed at each time point in order of the treatment groups from left to right in the table (ie, Week x, n=x, x, x, x, and x) if different from the "Number of Participants Analyzed." NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants in each treatment group who experienced viral relapse within 12 weeks (ie, at Week 36 or 60) after actual end of treatment (EOT) (up to Week 24 or 48). Viral relapse was defined as confirmed detectable plasma hepatitis C virus (HCV) ribonucleic acid (RNA) levels during the post treatment follow-up period at Weeks 36 or 60 in participants with undetectable plasma HCV RNA at EOT. The statistical analysis shows the difference in treatments (ie, each TMC435 group minus PR48 control) in viral relapse. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the mean (standard deviation) of the actual HCV RNA values by treatment group at Baseline and Weeks 4, 12, 24, 48, end of treatment (EOT, up to Weeks 24 or 48), Weeks 60 and 72 (Week 24 in the post-treatment follow-up period). The number of participants analyzed is listed at each time point in order of the treatment groups from left to right in the table (ie, Week x, n=x, x, x, x, and x) if different from the "Number of Participants Analyzed." NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the number of participants whose ALT results were within the normal range on Day 1 (initial day of treatment), Week 24, 48, and EOT (up to Weeks 24 or 48).The number of participants analyzed is listed at each time point in order of the treatment groups from left to right in the table (ie, Week x, n=x, x, x, x, and x) if different from the "Number of Participants Analyzed." NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the percentage of participants with a SVR4, SVR12, and SVR24 defined as undetectable plasma hepatitis C virus (HCV) ribonucleic acid (RNA) at the end of treatment (EOT) (up to Weeks 24 or 48) and at 4, 12, and 24 weeks, respectively, after the last dose of treatment. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the mean (standard deviation) predose plasma concentration (C0h) for participants in each treatment group at Weeks 4, 12, and 24. The number of participants analyzed is listed at each time point in order of the treatment groups from left to right in the table (ie, Week x, n=x, x, x, x, and x) if different from the "Number of Participants Analyzed." NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the mean predose plasma concentration (C0h) for participants in the 2 TMC435 50 mg treatment groups combined and for participants in the 2 TMC435 100 mg treatment groups combined who had intensive blood samples collected at Weeks 4 to 6. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the mean AUC24 of TMC435 for participants in the 2 TMC435 50 mg treatment groups combined (TMC12/PR24 50 mg and TMC24/PR24 50 mg) and for participants in the 2 TMC435 100 mg treatment groups combined (TMC12/PR24 100 mg and TMC24/PR24 100 mg) who had intensive blood samples collected at Weeks 4 to 6. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the median time in hours to reach the maximum plasma concentration (tmax) of TMC435 for participants in the 2 TMC435 50 mg treatment groups combined (TMC12/PR24 50 mg and TMC24/PR24 50 mg) and for participants in the 2 TMC435 100 mg treatment groups combined (TMC12/PR24 100 mg and TMC24/PR24 100 mg) who had intensive blood samples collected at Weeks 4 to 6. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

The table below shows the number of participants who met response-guided treatment (RGT) stopping criteria in the TMC435 treatment groups. Participants who achieved plasma hepatitis C virus (HCV) ribonucleic acid (RNA) levels less than 1.4 log10 IU/mL at Week 4 and had undetectable plasma HCV RNA at Weeks 12, 16 and 20 were to stop all study medication (TMC435, PegIFNα-2a, and ribavirin) at Week 24. All other participants continued PegIFNα-2a and ribavirin until Week 48. NOTE: All outcome measures reported in this study are "Exploratory;" not "Primary" as indicated (refer to Limits and Caveats).

Fluctuation index, ie, percentage fluctuation: variation between maximum (Cmax) and minimum (Cmin) plasma concentration at steady-state, calculated as: 100 x (\[Cmax-Cmin\]/Css,av). Css,av is an average steady-state plasma concentration.

The C(max) is the maximum plasma concentration.

The AUC (infinity) is the area under the plasma concentration-time curve from time zero to infinite time, calculated as the sum of AUC (last) and C (last)/lambda (z), wherein AUC(last) is area under the plasma concentration-time curve from time zero to last quantifiable time; and C (last) is the last observed quantifiable concentration; and lambda (z) is elimination rate constant.

Comparing the rate and extent of absorption (bioavailability) of 2 different liquid formulations (oral suspension \[150 mg ie, 20 mg/mL\] and oral solution \[150 mg ie, 10 mg/mL\]) versus capsule formulation (150 mg) of TMC435, after a high-fat breakfast (fed state)

Comparing the rate and extent of absorption (bioavailability) of 2 different liquid formulations (oral suspension \[150 mg ie, 20 mg/mL\] and oral solution \[150 mg ie, 10 mg/mL\]) of TMC435 in fed state (high-fat breakfast) versus fasted state

Comparing the rate and extent of absorption (bioavailability) of 2 different capsule formulations (concept K capsule \[150 mg\] and concept L capsule \[150 mg\]) versus capsule formulation (150 mg) of TMC435 after a high-fat breakfast (fed state)