Plasma HCV RNA levels (reported as log10 IU/mL) were determined for each sample using a real-time reverse transcriptase-polymerase chain reaction (RT-PCR) assay that had a lower limit of detection of 10 IU/mL and a lower limit of quantification of 25 IU/mL. The baseline value was the HCV RNA level before the first dose of study drug on Day 1. The maximal change during monotherapy was the difference from baseline to the lowest log10 HCV RNA level anytime after the first dose of study drug on Day 1 through the last log10 HCV RNA level before the first dose of study drug on Day 4. Data are reported as the mean ± standard deviation.

Participants received at least one dose of study drug (direct-acting antiviral agent) and have both baseline and at least one post-baseline measurement of HCV RNA levels during monotherapy treatment.

Plasma hepatitis C virus ribonucleic acid (HCV RNA) levels were determined for each sample using a real-time reverse transcriptase-polymerase chain reaction (RT-PCR) assay that had a lower limit of detection of 10 IU/mL and a lower limit of quantification (LLOQ) of 25 IU/mL. Rapid virologic response was defined as HCV RNA level < LLOQ (< 25 IU/mL) at Week 4. Data are reported as the percentage of participants with RVR.

All participants who received at least one dose of study drug and had at least one post-baseline HCV RNA value were included in this efficacy analysis.

Plasma hepatitis C virus ribonucleic acid (HCV RNA) levels were determined for each sample using a real-time reverse transcriptase-polymerase chain reaction (RT-PCR) assay that had a lower limit of detection of 10 IU/mL and a lower limit of quantification of 25 IU/mL. Partial early virologic response (EVR) was defined as HCV RNA levels that decreased > 2 log10 IU/mL at Week 12 as compared to baseline. The baseline value was the last measurement before the first dose on Day 1. Data are reported as the percentage of participants with partial EVR.

To be included in the efficacy analysis, participants received at least one dose of study drug (direct-acting antiviral agent) and at least one post-baseline measurement of HCV RNA levels.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ABT-450 using validated analytical methods. The maximum plasma concentration (Cmax; measured in ng/mL) is the highest concentration that a drug achieves in the blood after administration in a dosing interval. The Cmax of ABT-450 was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ABT-450 using validated analytical methods. The time to maximum plasma concentration (Tmax; measured in hours) is the time it takes for a drug to achieve Cmax. The Tmax of ABT-450 was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ABT-450 using validated analytical methods. The area under the plasma concentration-time curve (AUC; measured in ng*hr/mL) is a method of measurement to determine the total exposure of a drug in blood plasma. The AUC24 of ABT-450 was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ritonavir using validated analytical methods. The maximum plasma concentration (Cmax; measured in ng/mL) is the highest concentration that a drug achieves in the blood after administration in a dosing interval. The Cmax of ritonavir was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ritonavir using validated analytical methods. The time to maximum plasma concentration (Tmax; measured in hours) is the time it takes for a drug to achieve Cmax. The Tmax of ritonavir was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ritonavir using validated analytical methods. The area under the plasma concentration-time curve (AUC; measured in ng*hr/mL) is a method of measurement to determine the total exposure of a drug in blood plasma. The AUC24 of ritonavir was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ABT-072 using validated analytical methods. The maximum plasma concentration (Cmax; measured in ng/mL) is the highest concentration that a drug achieves in the blood after administration in a dosing interval. The Cmax of ABT-072 was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ABT-072 using validated analytical methods. The time to maximum plasma concentration (Tmax; measured in hours) is the time it takes for a drug to achieve Cmax. The Tmax of ABT-072 was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ABT-072 using validated analytical methods. The area under the plasma concentration-time curve (AUC; measured in ng*hr/mL) is a method of measurement to determine the total exposure of a drug in blood plasma. The AUC24 of ABT-072 was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ABT-333 using validated analytical methods. The maximum plasma concentration (Cmax; measured in ng/mL) is the highest concentration that a drug achieves in the blood after administration in a dosing interval. The Cmax of ABT-333 was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours); 2, 4, 8, 12, and 16 hours after the morning dose on Day 1; and prior to dose on Day 2 (24 hours after Day 1 dose). The samples were analyzed for the concentration of ABT-333 using validated analytical methods. The time to maximum plasma concentration (Tmax; measured in hours) is the time it takes for a drug to achieve Cmax. The Tmax of ABT-333 was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Blood samples were collected immediately prior to morning dose (time 0 hours) and at 2, 4, 8, and 12 hours after the morning dose on Day 1. The samples were analyzed for the concentration of ABT-333 using validated analytical methods. The area under the plasma concentration-time curve (AUC; measured in ng*hr/mL) is a method of measurement to determine the total exposure of a drug in blood plasma. The AUC12 of ABT-333 was estimated using non-compartmental methods and data are reported as the mean ± standard deviation.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the pharmacokinetic analysis.

Plasma hepatitis C virus ribonucleic acid (HCV RNA) levels were determined for each sample using a real-time reverse transcriptase-polymerase chain reaction (RT-PCR) assay that had a lower limit of detection of 10 IU/mL and a lower limit of quantification (LLOQ) of 25 IU/mL. Complete EVR was defined as HCV RNA levels < LLOQ (< 25 IU/mL) at Week 12. Data are reported as the percentage of participants with cEVR.

To be included in the efficacy analysis, participants received at least one dose of study drug (direct-acting antiviral agent) and have at least one post-baseline measurement of HCV RNA levels.

Baseline samples were analyzed for resistance-associated amino acid variants using population and clonal sequencing and were compared with the appropriate reference sequence (1a-H77 or 1b-Con1). Phenotypic resistance to ABT-450 at baseline was assessed by calculating the fold difference in the half maximal effective concentration (EC50) compared with the EC50 for the appropriate reference replicon (1a-H77 or 1b-Con1). Available samples at Day 4 with HCV RNA ≥ 1000 IU/mL were analyzed for resistance-associated variants using population and clonal sequencing and were compared with the baseline sequences to assess amino acid changes. Phenotypic resistance to ABT-450 at Day 4 was assessed by calculating the fold difference in the EC50 compared with the EC50 for the corresponding baseline sample. The number of participants with variants at resistance-associated amino acid positions and phenotypic resistance are presented.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the analysis. When the number of participants used to analyze the data at a specific time point differs from the Number of Participants Analyzed, the n (number of participants) is denoted in the Category Title.

Baseline samples were analyzed for resistance-associated amino acid variants using population and clonal sequencing and were compared with the appropriate reference sequence (1a-H77 or 1b-Con1). Phenotypic resistance to ABT-072 at baseline was assessed by calculating the fold difference in the half maximal effective concentration (EC50) compared with the EC50 for the appropriate reference replicon (1a-H77 or 1b-Con1). Available samples at Day 4 with HCV RNA ≥ 1000 IU/mL were analyzed for the presence of resistance-associated variants using population and clonal sequencing and were compared with the baseline sequences to assess amino acid changes. Phenotypic resistance to ABT-072 at Day 4 was assessed by calculating the fold difference in the EC50 compared with the EC50 for the corresponding baseline sample. The number of participants with variants at resistance-associated amino acid positions and phenotypic resistance are presented.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the analysis. When the number of participants used to analyze the data at a specific time point differs from the Number of Participants Analyzed, the n (number of participants) is denoted in the Category Title.

Baseline samples were analyzed for resistance-associated amino acid variants using population and clonal sequencing and were compared with the appropriate reference sequence (1a-H77 or 1b-Con1). Phenotypic resistance to ABT-333 at baseline was assessed by calculating the fold difference in the half maximal effective concentration (EC50) compared with the EC50 for the appropriate reference replicon (1a-H77 or 1b-Con1). Available samples at Day 4 with HCV RNA ≥ 1000 IU/mL were analyzed for the presence of resistance-associated variants using population and clonal sequencing and were compared with the baseline sequences to assess amino acid changes. Phenotypic resistance to ABT-333 at Day 4 was assessed by calculating the fold difference in the EC50 compared with the EC50 for the corresponding baseline sample. The number of participants with variants at resistance-associated amino acid positions and phenotypic resistance are presented.

All participants who received at least one dose of study drug (direct-acting antiviral agent) were included in the analysis. When the number of participants used to analyze the data at a specific time point differs from the Number of Participants Analyzed, the n (number of participants) is denoted in the Category Title.

The Hepatitis C Virus Patient-report Outcomes (HCV-PRO, formerly known as HCV Quality of Life) survey was used to assess disease-specific function and well-being on a scale from 0 to 100; a higher score indicated relatively good function and well-being of treated participants. Data presented are the summaries across all participants, for each treatment arm, regardless of dose. Data are reported as the group mean change from baseline ± standard deviation.

Participants received at least one dose of study drug (direct-acting antiviral agent) and have both baseline and at least one post-baseline measurement of HCV RNA levels during monotherapy treatment.

The ED-5D VAS was a self-rating survey used to capture the current health status of a participant and ranged from 0 (the worst imaginable health state) to 100 (best imaginable health state). Data presented are the summaries across all participants, for each treatment arm, regardless of dose. Data are presented as the group mean change from baseline ± standard deviation.

Participants received at least one dose of study drug (direct-acting antiviral agent) and have both baseline and at least one post-baseline measurement of HCV RNA levels during monotherapy treatment.

The EQ-5D was a health state questionnaire used to measure five health dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression). The combination of responses from all five dimensions were derived into an index score ranging from 0 to 1; a higher score indicated a more preferable health utility value from the societal perspectives. Data presented are the summaries across all participants, for each treatment arm, regardless of dose. Data are presented as the group mean change from baseline ± standard deviation.

Participants received at least one dose of study drug (direct-acting antiviral agent) and have both baseline and at least one post-baseline measurement of HCV RNA levels during monotherapy treatment.

The Physical Component Summary (PCS) of the SF-36 was used to measure the overall physical health status of a participant. The aggregated score of the SF-36 PCS score was standardized using a linear T-score transformation with a mean of 50 and a standard deviation of 10; a higher score indicated better physical function and well-being. Data presented are the summaries across all participants, for each treatment arm, regardless of dose. Data are presented as the group mean change from baseline ± standard deviation.

Participants received at least one dose of study drug (direct-acting antiviral agent) and have both baseline and at least one post-baseline measurement of HCV RNA levels during monotherapy treatment.

The Mental Component Summary (MCS) of the SF-36 was used to measure the overall mental health status of participants. The aggregated score of the SF-36 MPS was standardized using a linear T-score transformation with a mean of 50 and a standard deviation of 10; a higher score indicated better mental function and well-being. Data presented are the summaries across all participants, for each treatment arm, regardless of dose. Data are presented as the group mean change from baseline ± standard deviation.

Participants received at least one dose of study drug (direct-acting antiviral agent) and have both baseline and at least one post-baseline measurement of HCV RNA levels during monotherapy treatment.