The primary hypothesis to be tested is whether or not there is a difference in time to sustained alleviation of all targeted COVID-19 signs and symptoms through Day 28 between PF-07321332/ritonavir and placebo.
Throughout the study period, provision will be made to allow study visits to be conducted at a participant's home or at another non-clinic location, if available. The total study duration is up to 24 weeks.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
1,440
Time to Sustained Alleviation of Overall COVID-19 Signs and Symptoms Through Day 28
Sustained alleviation of targeted COVID-19 signs/symptoms was defined as the event occurring on the first 4 consecutive days when all symptoms scored as moderate or severe at the time of enrollment were scored as mild or absent and those scored mild or absent at the time of enrollment were scored as absent. Missing severity at baseline was considered as mild. Time to sustained alleviation of all targeted COVID-19 signs and symptoms through Day 28, was calculated as time (days) from start of study intervention or placebo (Day 1) until sustained alleviation of all targeted COVID-19 associated signs and symptoms. In this outcome measure time to sustained alleviation is reported consolidated for overall COVID-19 signs and symptoms.
Time frame: From Day 1 to Day 28
Number of Participants With Treatment Emergent Adverse Events (TEAEs), Serious AEs and AEs Leading to Study and Study Drug Discontinuation
An AE was defined as any untoward medical occurrence in a participant or clinical study participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence at any dose that resulted in any of the following outcomes: death; life-threatening ; required inpatient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity ; congenital anomaly/birth defect; or that was considered as an important medical event. TEAEs were defined as events that started on or after the study medication start date and time. AEs included both serious and all non-serious adverse events. AEs that led to study discontinuation and AEs that led to discontinuation of study intervention and then continued study were also reported in this outcome measure.
Time frame: From start of study intervention (Day 1) up to Day 34
Percentage of Participants With COVID-19 Related Hospitalization or Death From Any Cause Through Day 28
Percentage of participants with COVID-19 related hospitalization or death from any cause during the first 28 days of the study was estimated using the Kaplan-Meier (KM) method.
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Placebo (capsule)
Cahaba Research Inc
Pelham, Alabama, United States
The Institute for Liver Health dba Arizona Clinical Trials
Mesa, Arizona, United States
Matrix Mobile Health Clinic #49, #35, and #62
Scottsdale, Arizona, United States
The Institute for Liver Health dba Arizona Clinical Trials
Tucson, Arizona, United States
Hope Clinical Research
Canoga Park, California, United States
Lightship
El Segundo, California, United States
Ascada Research
Fullerton, California, United States
Atella Clinical Research LLC.
La Palma, California, United States
Ark Clinical Research
Long Beach, California, United States
South Bay Clinical Research Institute
Redondo Beach, California, United States
...and 215 more locations
Time frame: From Day 1 to Day 28
Percentage of Participants With Death Through Week 24
Percentage of participants with death (all-cause) event were reported in this outcome measure.
Time frame: From Day 1 to Week 24
Number of COVID-19 Related Medical Visits Per Day Through Day 28
Number of COVID-19 related medical visits per day were reported in this outcome measure.
Time frame: From Day 1 to Day 28
Duration of Hospitalization and Intensive Care Unit (ICU) Stay Through Day 28
Time frame: From Day 1 to Day 28
Percentage of Participants With Severe Signs and Symptoms of COVID-19 Through Day 28
Participants recorded a daily severity rating of their symptom severity over the past 24 hours based on a 4-point scale in which 0 was reported if no symptoms were present; 1 if mild; 2 if moderate; and 3 if severe. A participant with severe score for any targeted symptoms post-baseline was counted as severe. Vomiting and diarrhea each was rated on a 4-point frequency scale where 0 was reported for no occurrence, 1 for 1 to 2 times, 2 for 3 to 4 times, and 3 for 5 or greater. Sense of smell and sense of taste each be rated on a 3-point Likert scale where 0 was reported if the sense of smell/taste was the same as usual, 1 if the sense of smell/taste was less than usual, and 2 for no sense of smell/taste.
Time frame: From Day 1 to Day 28
Time to Sustained Resolution of Overall COVID-19 Signs and Symptoms Through Day 28
Sustained resolution was defined as when targeted symptoms are scored as absent for 4 consecutive days. The first day of the 4 consecutive-day period was considered the first event date.
Time frame: From Day 1 to Day 28
Time to Sustained Alleviation of Each COVID-19 Signs and Symptoms Through Day 28
Sustained alleviation of targeted COVID-19 signs/symptoms was defined as the event occurring on the first 4 consecutive days when all symptoms scored as moderate or severe at the time of enrollment were scored as mild or absent and those scored mild or absent at the time of enrollment were scored as absent. Missing severity at baseline was treated as mild. Time to sustained alleviation of all targeted COVID-19 signs and symptoms through Day 28, was calculated as time (days) from start of study intervention or placebo (Day 1) until sustained alleviation of all targeted COVID-19 associated signs and symptoms. In this outcome measure time to sustained alleviation is reported for each COVID-19 signs and symptoms.
Time frame: From Day 1 to Day 28
Time to Sustained Resolution of Each COVID-19 Signs and Symptoms Through Day 28
Sustained resolution was defined as when targeted symptoms are scored as absent for 4 consecutive days. The first day of the 4 consecutive-day period was considered the first event date. In this outcome measure time to sustained resolution is reported consolidated for each COVID-19 signs and symptoms.
Time frame: From Day 1 to Day 28
Percentage of Participants With Progression to Worsening Status of COVID-19 Signs and Symptoms
Participants recorded a daily severity rating of their symptom severity over the past 24 hours based on a 4-point scale in which 0 was reported if no symptoms were present; 1 if mild; 2 if moderate; and 3 if severe. Vomiting and diarrhea was rated on a 4-point frequency scale where 0 is reported for no occurrence, 1 (mild) for 1 to 2 times, 2 (moderate) for 3 to 4 times, and 3 (severe) for 5 or greater. Progression to a worsening status for any targeted symptom was based up on increasing severity (i.e. the first time any targeted symptoms worsened after treatment relative to baseline).
Time frame: From Day 1 to Day 28
Percentage of Participants With Resting Peripheral Oxygen Saturation Greater Than or Equal to (>=) 95% at Day 1 and Day 5
Percentage of participants with a resting peripheral oxygen saturation \>=95% were reported in this outcome measure.
Time frame: Day 1 and Day 5
Plasma Concentration Versus Time Summary of PF-07321332
Time frame: Day 1: 1 hour post dose; Day 5: 0 minutes pre-dose
Change From Baseline in Logarithm to Base10 (Log10) Transformed Viral Load at Days 3, 5, 10 and 14
Nasal samples were collected to estimate the viral load in participants in terms of logarithm to base 10 (log10) copies per milliliter.
Time frame: Baseline, Days 3, 5, 10 and 14