The purpose of this study is to characterize the Pharmacokinetic and to confirm the popPK model derived from healthy volunteers in hospitalized adults who are infected with respiratory syncytial virus (RSV) and to determine in adults who are hospitalized with respiratory syncytial virus (RSV) infection the dose response relationship of multiple regimens of lumicitabine on antiviral activity based on nasal RSV shedding using quantitative real-time reverse transcriptase-polymerase chain reaction (qRT-PCR) assay.
The study will be conducted in 3 phases: a screening phase, a treatment phase from Day 1 to Day 5/6 (depending on the timing of the loading dose), and a follow-up phase for a total of 28 days post randomization. Participants will have assessments completed at Day 7, Day 10, Day 14, and Day 28. Depending on discharge date, assessments will be completed either while hospitalized or during outpatient visits. The duration of the participant's participation will be approximately 28 days. The study will be performed in 2 parts. Participants will be randomly assigned to one of 2 treatment groups in part 1, and to one of 3 treatment groups in part 2. Treatment groups will be evaluated for PK and safety after a target of approximately 24 participants have been enrolled in part 1 and before initiating part 2 (approximately 90 participants in part 2). An Independent Data Monitoring Committee (IDMC) will be established to monitor the safety of participants and will review data in an unblinded manner on a regular basis to ensure the continuing safety of the participants enrolled in this study and to evaluate whether efficacy objectives are met. The committee will meet periodically to review interim data. Based on the recommendations of the IDMC following interim analyses/reviews, an increase in duration may be implemented.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
49
Oral administration of lumicitabine as tablet.
Oral administration of matching placebo.
Unnamed facility
Fresno, California, United States
Unnamed facility
Orange, California, United States
Unnamed facility
Stanford, California, United States
Unnamed facility
Eustis, Florida, United States
Unnamed facility
Atlanta, Georgia, United States
Unnamed facility
Maximum Observed Plasma Concentration (Cmax) of JNJ-63549109 at Day 1
Cmax is the maximum observed plasma concentration of JNJ-63549109. JNJ-63549109 is the metabolized product of lumicitabine.
Time frame: Day 1
Maximum Observed Plasma Concentration (Cmax) of JNJ-63549109 at Day 5
Cmax is the maximum observed plasma concentration of JNJ-63549109. JNJ-63549109 is the metabolized product of lumicitabine.
Time frame: Day 5
Area Under the Plasma Concentration-time Curve From Time 0 to 24 Hours After Dosing (AUC[0-24h]) of JNJ-63549109 at Day 1
AUC(0-24) is the area under the plasma concentration-time curve from time 0 to 24 hours after dosing of JNJ-63549109. JNJ-63549109 is the metabolized product of lumicitabine.
Time frame: Day 1
Area Under the Plasma Concentration-time Curve From Time 0 to 24 Hours After Dosing (AUC[0-24h]) of JNJ-63549109 at Day 5
AUC(0-24) is the area under the plasma concentration-time curve from time 0 to 24 hours after dosing of JNJ-63549109. JNJ-63549109 is the metabolized product of lumicitabine.
Time frame: Day 5
Trough Observed Plasma Concentration (Ctrough) of JNJ-63549109 at Day 1
Ctrough is the trough observed plasma concentration of JNJ-63549109. JNJ-63549109 is the metabolized product of lumicitabine.
Time frame: Day 1
Trough Observed Plasma Concentration (Ctrough) of JNJ-63549109 at Day 5
Ctrough is the trough observed plasma concentration of JNJ-63549109. JNJ-63549109 is the metabolized product of lumicitabine.
Time frame: Day 5
Least Square Mean Difference (Low and High Dose Lumicitabine Versus Placebo) of Respiratory Syncytial Virus (RSV) Ribonucleic Acid (RNA) Viral Load Area Under the Concentration-time Curve From Day 1 to 7 (AUC[1-7])
RSV RNA viral load in log10 copies/milliliter/day (log10 copies/mL/day) was measured in mid-turbinate nasal swabs and in endotracheal samples (obtained from intubated participants or via suction through tracheostomy or other sampling methods) using quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Due to early termination of study, the analysis was not conducted as planned. Instead, using the same specification as for the primary analysis, a comparison was made on the AUC(1-7) days of pooled active treatment groups versus pooled placebo. The comparison was done as planned using a mixed model for repeated measures, using all available viral load data of baseline up to and including Day 7. The model computes the AUC at group level based on all available data, taking missing data into account under the missing at random assumption. The table reports the planned difference versus (pooled) placebo. No adjustment for multiplicity was applied.
Time frame: Day 1 (Baseline) to 7
Number of Participants With Adverse Events (AEs)
An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal finding), symptom, or disease temporally associated with the use of a medicinal (investigational or non-investigational) product, whether or not related to that medicinal (investigational or non-investigational) product.
Time frame: Up to 28 Days
Number of Participants With Vital Sign Abnormalities
Number of participants with vital sign (systolic and diastolic blood pressure \[BP\], pulse rate, respiratory rate, temperature and oxygen saturation) abnormalities were reported. For systolic BP: abnormally low refers to less than or equal to (\<=) 90 millimeter of mercury (mmHg); for diastolic BP: abnormally low refers to \<= 50 mmHg; for pulse rate abnormally low refers to less than (\<) 45 beats per minutes (bpm) and abnormally high refers to greater than or equal to (\>=) 120 bpm; for temperature in degree Celsius abnormally high refers to greater than (\>) 37.8 (tympanic), \>38.0 (forehead), \>38.0 (oral), \>37.2 (rectal), \>38.0 (axillary); for oxygen saturation in percentage (%) abnormally low refers to \< 95. Grade 1 = mild; grade 2 = moderate; grade 3 = severe.
Time frame: Up to 28 Days
Number of Participants With QT Interval Abnormalities
Number of participants with QT interval abnormalities (prolonged) were reported.
Time frame: Up to 28 Days
Number of Participants With Clinical Laboratory Abnormalities
Number of participants with clinical laboratory (serum chemistry and hematology) abnormalities were reported. Abbreviations; Erythrocyte MCHC = Erythrocyte Mean Corpuscular Hemoglobin Concentration; Erythrocyte MCH = Erythrocyte Mean Corpuscular Hemoglobin; Ery. = Erythrocyte
Time frame: Up to 28 Days
Time of Hospital Stay From Study Treatment Initiation to Discharge
It is the time from treatment initiation to hospital discharge in hours.
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Chicago, Illinois, United States
Unnamed facility
St Louis, Missouri, United States
Unnamed facility
Butte, Montana, United States
Unnamed facility
Rochester, New York, United States
Unnamed facility
Syracuse, New York, United States
...and 99 more locations
Time frame: From study treatment initiation to discharge (Up to 28 Days)
Time of Hospital Stay From Admission to Discharge
It is the time from hospital admission to hospital discharge in hours.
Time frame: From admission to discharge (Up to 28 Days)
Time of Hospital Stay From Study Treatment Initiation to Readiness for Discharge
It is the time from study treatment initiation to readiness for discharge in hours, with readiness for discharge defined by the investigator.
Time frame: From study treatment initiation to readiness for discharge on Day 2 or up to Day 6 if hospitalization is prolonged
Time of Hospital Stay From Admission to Readiness for Discharge
It is the time from hospital admission to readiness for discharge in hours, with readiness for discharge defined by the investigator.
Time frame: Up to 28 Days
Number of Participants Who Required to be Admitted to the Intensive Care Unit (ICU) Since Initiation of Treatment
Number of participants who required to be admitted to the ICU since initiation of treatment were reported.
Time frame: Up to 28 Days
Duration of Intensive Care Unit Stay
In the event that a participant required ICU since initiation of treatment, the duration for how long the participant remained in the ICU was measured.
Time frame: Up to 28 Days
Number of Participants Who Required Supplemental Oxygen
Number of participants who required supplemental oxygen were reported.
Time frame: Up to 28 Days
Time to End of Oxygen Supplementation
It is the time from first dose of study drug to the last end date and time of any oxygen supplementation in hours.
Time frame: Up to 28 Days
Time (Number of Hours) Until Peripheral Capillary Oxygen Saturation (SpO2) Greater Than or Equal to (>=) 93 Percent (%) on Room Air Among Participants Who Were Not on Supplemental Oxygen Prior to the Onset of Respiratory Symptoms
Time (number of hours) until SpO2 \>= 93% on room air among participants who were not on supplemental oxygen prior to the onset of respiratory symptoms was reported.
Time frame: Up to 28 Days
Time to Return to Pre-respiratory Syncytial Virus (Pre-RSV) Disease Level for Respiratory Rate
It is the time from first dose of study drug until the time to return to pre-RSV disease level for respiratory rate. The return to pre-RSV disease level occurred when the observed value of the parameter was indicated by the investigator as normal, and no later observed values were indicated by the investigator as abnormal.
Time frame: Up to 28 Days
Time to Return to Pre-RSV Disease Level for Oxygen Saturation
It is the time from first dose of study drug until the time to return to pre-RSV disease level for oxygen saturation. The return to pre-RSV disease level occurred when the observed value of the parameter was indicated by the investigator as normal, and no later observed values were indicated by the investigator as abnormal.
Time frame: Up to 28 Days
Time to Return to Pre-RSV Disease Level for Body Temperature
It is the time from first dose of study drug until the time to return to pre-RSV disease level for body temperature. The return to pre-RSV disease level occurred when the observed value of the parameter was indicated by the investigator as normal, and no later observed values were indicated by the investigator as abnormal.
Time frame: Up to 28 Days
Number of Participants Who Required Noninvasive Mechanical Ventilation Support
Number of participants who required noninvasive mechanical ventilation support (that is supplemental oxygen \[excluding mechanical ventilation\]) were reported.
Time frame: Up to 28 Days
Time to End of Noninvasive Mechanical Ventilation Support
It is the time from first dose of study drug to the last end date and time of noninvasive mechanical ventilation support in hours.
Time frame: Up to 28 Days
Number of Participants Who Required Invasive Mechanical Ventilation Support
Number of participants who required invasive mechanical ventilation support were reported.
Time frame: Up to 28 Days
Time to End of Invasive Mechanical Ventilation Support
It is the time from first dose of study drug to the last end date and time of invasive mechanical ventilation support in hours.
Time frame: Up to 28 Days
Time to Return to Pre-RSV Functional Status as Assessed by KATZ Activities of Daily Living (ADL) Score
It is the time from first dose of study drug until the time to return to pre-RSV functional status. Functional status is the total points on the KATZ index of independence in activities of daily living (KATZ ADL score). Katz activities of daily living assessed questions related to bathing, dressing, toileting, transferring, continence and feeding components. Total score was calculated by adding the scores for all 6 activities which ranges from 0 high (participant independent) to 6 low (participant very dependent). If one or more component was missing, then the KATZ ADL score was not calculated. The return to pre-RSV functional status occurs at the timepoint where for the first time the KATZ ADL score is equal or higher than the pre-RSV KATZ ADL score and after which no scores lower than the pre-RSV KATZ ADL score occur anymore.
Time frame: Up to 28 Days
Number of Participants Who Required Hydration or Feeding by Intravenous (IV) Catheter or Nasogastric Tube
Number of participants who required hydration or feeding by IV catheter or nasogastric tube were reported.
Time frame: Up to 28 Days
Time to Clinical Stability
Time to clinical stability is defined as the time from first dose of study drug until the time at which the following criteria were all met: normalization of blood oxygen level (return to baseline; by pulse oximetry) without requirement of supplemental oxygen beyond baseline level, normalization of oral feeding, normalization of respiratory rate and normalization of heart rate.
Time frame: Up to 28 Days
Number of Participants in Each Ordinal Scale Category
Number of participants in each ordinal scale category were reported. Ordinal scale consists of 6 categories or clinical states that are exhaustive, mutually exclusive, and ordered: category 1) death; category 2) admitted to ICU; category 3) non-ICU hospitalization requiring supplemental oxygen; category 4) non-ICU hospitalization not requiring supplemental oxygen; category 5) not hospitalized, unable to resume normal activities; category 6) not hospitalized, resumption of normal activities.
Time frame: Day 5/6 (Day of last study treatment)
Number of Participants With All-Cause Mortality
All-cause mortality included all deaths of participants due to any cause.
Time frame: Up to 28 Days
RSV RNA Viral Load Over Time
Antiviral activity RSV RNA viral load was measured in mid-turbinate nasal swabs (obtained from non-intubated participants) or in mid-turbinate nasal swabs and endotracheal samples (obtained from intubated participants or via suction through tracheostomy or other sampling methods) using qRT-PCR performed at the central laboratory.
Time frame: Days 2, 3, 4, 5, 6, 7, 10, 14, and 28
Peak Viral Load
Peak Viral load is the highest value of log10 viral load at or after the baseline measurement. Peak viral load over time was measured by qRT-PCR.
Time frame: Up to 28 Days
Time to Peak Viral Load
Time to peak viral load is the time from initiation of study treatment until the first time point with the peak viral load.
Time frame: Up to 28 Days
Rate of Decline of Viral Load
Rate of decline of viral load over the first 24 hours calculated as a log decline/24 hours defined as: 24-hour log viral load after first dose of study drug minus (-) log viral load at baseline divided by (/) date/time of 24-hour viral load sample - date/time of baseline viral load.
Time frame: Up to 28 Days
Time to RSV RNA Viral Load Being Undetectable
It is the time in hours from initiation of study treatment until the first post baseline time point at which the virus is undetectable in an assessment and after which time no detectable virus assessment follows as measured by qRT-PCR.
Time frame: Up to 28 Days
Number of Participants With Undetectable Viral Load
Number of participants with undetectable viral load up to 28 days were reported.
Time frame: Up to 28 Days
RSV RNA Viral Load AUC up to Day 14
RSV RNA viral load was measured in midturbinate nasal swabs and in endotracheal samples (obtained from intubated participants or via suction through tracheostomy or other sampling.
Time frame: Up to Day 14
RSV RNA Viral Load AUC in Participants Assigned to a Longer Dosing Duration
RSV RNA viral load was measured in midturbinate nasal swabs and in endotracheal samples (obtained from intubated participants or via suction through tracheostomy or other sampling.
Time frame: Up to 1 Day after the last dose of study drug
Number of Participants With Postbaseline Changes in the RSV Polymerase L Gene and Other Regions of the RSV Genome Compared With Baseline Sequences
Number of participants with postbaseline changes in the RSV polymerase L gene and other regions of the RSV genome compared with baseline sequences were reported.
Time frame: Baseline up to 28 Days