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TerminatedNCT05170009Updated Feb 26, 2025Results posted

Baloxavir in Combination With Oseltamivir in Allogenic Bone Marrow Transplant Recipients With Influenza

A Phase 2/3 interventional study of Baloxavir Marboxil and Placebo in Influenza, sponsored by Weill Medical College of Cornell University. Terminated at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-02-26.

Sponsored by Weill Medical College of Cornell University · Phase 2/3, Interventional, and Treatment

Why this study was terminated
Slow enrollment rate
Phase
Phase 2/3
Study type
Interventional
Enrollment
2
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a randomized, double-blind, placebo-controlled pilot study of the efficacy and safety of baloxavir in combination with oseltamivir (standard of care) for the treatment of influenza in allogeneic stem cell transplant patients. Although there are no data about this treatment option currently available, the investigator hypothesizes that combination therapy may be more effective in clearing influenza virus infection and decreasing the rate of emergence of resistant influenza in immunocompromised human hosts.

Read the detailed description

This is a randomized double-blind placebo-controlled pilot study of the efficacy and safety of baloxavir in combination with oseltamivir (standard of care) for the treatment of influenza in allogeneic stem cell transplant patients. 30 SCT recipients will take part in the study. Participants with be randomly assigned (1:1) to either baloxavir + oseltamivir or baloxavir-matched placebo +oseltamivir. Before randomization, patients will be stratified by hospitalization status and influenza type A (yes/no).

Patients in the baloxavir combination arm will receive weight-adjusted baloxavir (40 mg for patients weighing \<80 kg and 80 mg for those weighing ≥80 kg) at baseline and at day 4 and day 7. They will also receive oseltamivir 75 mg twice daily for 10 days. Patients in the baloxavir-matched placebo + oseltamivir arm will receive baloxavir-matched placebo at baseline and at day 3 and day 7and oseltamivir 75 mg twice daily for 10 days.

02

Conditions studied

  • Influenza

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Keywords

  • Influenza
  • Bone marrow transplant
  • Flu
  • Baloxavir Marboxil
  • Xofluza
  • Oseltamivir
03

In context

Influenza, Human

2,264 studies on the registry are indexed under Influenza, Human; 173 are open to participants now.

This study's enrollment of 2 is below the median of 240 across 1,894 interventional studies indexed under Influenza, Human.

Browse Influenza, Human studies →

Lead sponsor

Weill Medical College of Cornell University is the lead sponsor of 890 studies on the registry; 164 are open to participants now.

Of its 123 completed or terminated interventional studies of FDA-regulated products, 94 (76%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Adult patients: Signed informed consent by any patient capable of giving consent, or, where the patient is not capable of giving consent, by his or her legal/authorized representative
  • Age greater than or equal to 18 years at the time of signing the Informed Consent Form/Assent Form
  • Ability to comply with the study protocol, in the investigator's judgment
  • Have received allogeneic bone marrow transplant
  • Tested positive for influenza infection after the onset of symptoms using a polymerase chain reaction (PCR)-based diagnostic assay.
  • Presence of (a) fever (≥38.0 °C per tympanic or rectal thermometer; ≥ 37.5 °C per axillary, oral or forehead/temporal thermometer) or (b) any influenza symptoms (cough, sore throat, nasal congestion, headache, feverishness or chills, muscle or joint pain, fatigue).
  • The time interval between the diagnosis of influenza and the pre-dose examinations is 48 hours or less.
  • For women of childbearing potential: Agreement to remain abstinent (refrain from heterosexual intercourse):
  • Women must remain abstinent or use contraceptive methods with a failure rate of \< 1% per year during the treatment period and for 28 days after the last dose of study treatment. Hormonal contraceptive methods must be supplemented by a barrier method. A woman is considered to be of childbearing potential if she is postmenarcheal, has not reached a postmenopausal state greater than or equal to 12 continuous months of amenorrhea with no identified cause other than menopause), and has not undergone surgical sterilization (removal of ovaries and/or uterus). Examples of contraceptive methods with a failure rate of \< 1% per year include bilateral tubal ligation, male sterilization, hormonal contraceptives that inhibit ovulation, hormone-releasing intrauterine devices, and copper intrauterine devices. The reliability of sexual abstinence should be evaluated in relation to the duration of the clinical trial and the preferred and usual lifestyle of the patient. Periodic abstinence (e.g., calendar, ovulation, symptothermal, or postovulation methods) and withdrawal are not acceptable methods of contraception.

Exclusion criteria

Exclusion Criteria:

  • Patients who have received more than 48 hours of antiviral treatment for the current influenza infection prior to screening
  • Patients who have received Baloxavir for the current influenza infection
  • Known contraindication to neuraminidase inhibitors
  • Patients weighing \< 40 kg
  • Patients unable to swallow tablets
  • Patients with known severe renal impairment (estimated glomerular filtration rate \< 30 mL/min/1.73 m2) or receiving continuous renal replacement therapy, hemodialysis, peritoneal dialysis
  • Patients with any of the following laboratory abnormalities detected within 24 hours prior to or during screening (according to local laboratory reference ranges: ALT or AST level > 5 times the upper limit of normal (ULN) OR ALT or AST > 3 times the ULN and total bilirubin level > 2 times the ULN
  • Pregnant or breastfeeding, or positive pregnancy test in a predose examination, or intending to become pregnant during the study or within 28 days after the last dose of study treatment
  • Exposure to an investigational drug within 5 half-lives or 30 days (whichever is longer) of randomization
  • Any serious medical condition or abnormality in clinical laboratory tests that, in the investigator's judgment, precludes the patient's safe participation in and completion of the study
  • Known hypersensitivity to baloxavir marboxil or the drug product excipients
  • Known COVID-19 coinfection
  • Unwilling to undergo nasopharyngeal (NP) swabs as per study schedule
05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
2 participants (actual)

Study arms

  • Active comparator
    Active and standard of care

    Active Baloxavir Marboxil and standard of care Oseltamivir

    Drug: Baloxavir Marboxil · Drug: Oseltamivir

  • Placebo comparator
    Placebo and standard of care

    Placebo-matched Baloxavir Marboxil and standard of care Oseltamivir

    Drug: Placebo · Drug: Oseltamivir

Interventions

  • Weight-adjusted Baloxavir Marboxil (40 mg for patients weighing \<80 kg and 80 mg for those weighing ≥80 kg) at baseline, day 4, and day 7.

    Also known as: Xofluza

  • DrugPlacebo

    Placebo at baseline, day 4, and day 7.

  • Oseltamivir 75 mg twice daily for 10 days.

    Also known as: Tamiflu

06

What researchers measure

Primary outcomes

  1. Change of Influenza Viral RNA Loads From Baseline at the End of Treatment as Measured by Quantitative Real Time Polymerase Chain Reaction.

    Influenza viral RNA loads will be measured by quantitative real time polymerase chain reaction.

    Time frame: Baseline; Day 10

  2. Between-treatment-arm Difference in the Change of Influenza Viral RNA Loads From Baseline at the End of Treatment as Measured by Quantitative Real Time Polymerase Chain Reaction.

    Influenza viral load will be measured by the quantitative real time polymerase chain reaction.

    Time frame: Baseline; Day 10

  3. Between-treatment-arm Difference in the Change of Influenza Viral RNA Loads From Baseline at the End of Treatment as Measured by Influenza Plaque Assay (Replicating Virus).

    Influenza viral load will be measured by the influenza plaque assay.

    Time frame: Baseline; Day 10

Secondary outcomes

  1. Change of Influenza Viral RNA Load From Baseline at Day 4 and Day 7 and 10 in Each Treatment Arm

    Influenza viral RNA load will be measured by quantitative real time polymerase chain reaction.

    Time frame: Baseline; Day 4; Day 7; Day 10

  2. Difference in Change of Influenza Viral Loads From Baseline at Day 4, 7 and 10 Between the Two Treatment Arms as Measured by Quantitative Real Time Polymerase Chain Reaction

    Influenza viral RNA load will be measured by quantitative real time polymerase chain reaction.

    Time frame: Baseline; Day 4; Day 7; Day 10

  3. Change of Influenza Viral Loads From Baseline at Day 4, 7 and 10 as Measured by Influenza Plaque Assay (Replicating Virus) in Each Treatment Arm

    Influenza viral load will be measured by the influenza plaque assay (replicating virus).

    Time frame: Baseline; Day 4; Day 7; Day 10

  4. Difference in Change of Influenza Viral Loads From Baseline at Day 4, 7 and 10 Between the Two Treatment Arms as Measured by Influenza Plaque Assay (Replicating Virus)

    Influenza viral load will be measured by the influenza plaque assay (replicating virus).

    Time frame: Baseline; Day 4; Day 7; Day 10

  5. Time to Improvement of Individual Influenza Symptoms as Assessed by Patient-reported Outcome Measures on a Single Scale

    Patients will self-assess the severity of 7 influenza-associated symptoms on a 4-point single scale with 0 indicating no symptoms and higher scores indicating mild, moderate, and severe symptoms. Time to improvement of individual influenza symptoms are defined as the time from the start of treatment to the time when each of the influenza symptoms are alleviated, maintained, or improved for a duration of at least 21.5 hours. These are defined as: pre-existing symptoms (cough, fatigue, or muscle/join pain that existed prior to influenza) that were worse at baseline and had improved at least 1 point from baseline; pre-existing symptoms not worse at baseline that maintained baseline severity; and new symptoms that were alleviated, defined as a symptom score of non (0) or mild (1).

    Time frame: Baseline to Day 30

  6. Percentage of Patients Who Experience Each Influenza-related Complications: Hospitalization, Death, Sinusitis, Otitis Media, Bronchitis, and Radiologically-confirmed Pneumonia as an Adverse Event After the Initiation of Study Treatment

    A composite score of multiple measures will be used and calculated by count of patients who experience each influenza-related complications. Adverse events will only include those that are determined to be related to the study drug.

    Time frame: Day 1 to Day 30

  7. Time to Return to Preinfluenza Health Status

    Preinfluenza health status will be measured on a score from 0 (worst possible health) to 10 (normal health \[for someone your age and condition\]).

    Time frame: Day 1 to Day 30

  8. Time to Viral Clearance, as Assessed by Difference in Percentage of Participants Positive by Influenza Plaque Assay at Each Time-point (in Each Treatment Group)

    Time to viral clearance will be assessed by percentage of participants positive by influenza plaque assay at each time-point.

    Time frame: Baseline to Day 30

  9. Time to Viral Clearance, as Assessed by Difference in Percentage of Participants Positive by Quantitative Real Time Polymerase Chain Reaction

    Time to viral clearance will be assessed by percentage of participants positive by qPCR at each time-point.

    Time frame: Baseline to Day 30

  10. Change of Treatment-emergent Variants of Neuraminidase and Polymerase Known to Confer Antiviral Resistance to Oseltamivir in Each Arm by Direct Next-generation Sequencing Symptoms

    Treatment-emergent variants will be identified using direct next-generation sequencing of a comprehensive panel of genes.

    Time frame: Baseline to Day 30

  11. Percentage of Participants With Adverse Events (AEs)

    Adverse events will only include those that are determined to be related to the study drug and will assess the safety and tolerability of Baloxavir in Combination with SOC treatment.

    Time frame: Day 1 to Day 15

07

Results

Posted Feb 26, 2025
Limitations and caveats
Due to change in patterns of respiratory viruses, and low or no flu circulating, we were unable to enroll the target number of participants. The only participants enrolled were the 2 in the placebo arm, 1 of whom withdrew early on. No comparison is possible with only 1 placebo participant.

Participant flow

Recruitment for this study was challenging because of changed flu seasonality and low flu cases following covid-19

Participant flow — Overall Study
MilestoneActive and Standard of CarePlacebo and Standard of Care
Started02
Completed01
Not completed01
Withdrew: Physician decision01

Outcome measures

PrimaryChange of Influenza Viral RNA Loads From Baseline at the End of Treatment as Measured by Quantitative Real Time Polymerase Chain Reaction.

Influenza viral RNA loads will be measured by quantitative real time polymerase chain reaction.

Time frame:
Baseline; Day 10
Reported as:
Number · copies per mL
Change of Influenza Viral RNA Loads From Baseline at the End of Treatment as Measured by Quantitative Real Time Polymerase Chain Reaction.
copies per mLActive and Standard of CarePlacebo and Standard of Care
Baseline—2300000
Day 10—0
PrimaryBetween-treatment-arm Difference in the Change of Influenza Viral RNA Loads From Baseline at the End of Treatment as Measured by Quantitative Real Time Polymerase Chain Reaction.

Influenza viral load will be measured by the quantitative real time polymerase chain reaction.

Time frame:
Baseline; Day 10
Reported as:
Number · copies per mL
Between-treatment-arm Difference in the Change of Influenza Viral RNA Loads From Baseline at the End of Treatment as Measured by Quantitative Real Time Polymerase Chain Reaction.
copies per mLActive and Standard of CarePlacebo and Standard of Care
Baseline—2300000
Day 10—0
PrimaryBetween-treatment-arm Difference in the Change of Influenza Viral RNA Loads From Baseline at the End of Treatment as Measured by Influenza Plaque Assay (Replicating Virus).

Influenza viral load will be measured by the influenza plaque assay.

Time frame:
Baseline; Day 10
Reported as:
Number · PFU per mL
Between-treatment-arm Difference in the Change of Influenza Viral RNA Loads From Baseline at the End of Treatment as Measured by Influenza Plaque Assay (Replicating Virus).
PFU per mLActive and Standard of CarePlacebo and Standard of Care
Baseline—2300000
Day 10—0
SecondaryChange of Influenza Viral RNA Load From Baseline at Day 4 and Day 7 and 10 in Each Treatment Arm

Influenza viral RNA load will be measured by quantitative real time polymerase chain reaction.

Time frame:
Baseline; Day 4; Day 7; Day 10
Reported as:
Number · copies per mL
Change of Influenza Viral RNA Load From Baseline at Day 4 and Day 7 and 10 in Each Treatment Arm
copies per mLActive and Standard of CarePlacebo and Standard of Care
Baseline—2300000
Day 4—800
Day 7—1300
Day 10—0
SecondaryDifference in Change of Influenza Viral Loads From Baseline at Day 4, 7 and 10 Between the Two Treatment Arms as Measured by Quantitative Real Time Polymerase Chain Reaction

Influenza viral RNA load will be measured by quantitative real time polymerase chain reaction.

Time frame:
Baseline; Day 4; Day 7; Day 10
Reported as:
Number · copies per mL
Difference in Change of Influenza Viral Loads From Baseline at Day 4, 7 and 10 Between the Two Treatment Arms as Measured by Quantitative Real Time Polymerase Chain Reaction
copies per mLActive and Standard of CarePlacebo and Standard of Care
Baseline—2300000
Day 4—800
Day 7—1300
Day 10—0
SecondaryChange of Influenza Viral Loads From Baseline at Day 4, 7 and 10 as Measured by Influenza Plaque Assay (Replicating Virus) in Each Treatment Arm

Influenza viral load will be measured by the influenza plaque assay (replicating virus).

Time frame:
Baseline; Day 4; Day 7; Day 10
Reported as:
Number · PFU per mL
Change of Influenza Viral Loads From Baseline at Day 4, 7 and 10 as Measured by Influenza Plaque Assay (Replicating Virus) in Each Treatment Arm
PFU per mLActive and Standard of CarePlacebo and Standard of Care
Baseline—2300000
Day 4—800
Day 7—1300
Day 10—0
SecondaryDifference in Change of Influenza Viral Loads From Baseline at Day 4, 7 and 10 Between the Two Treatment Arms as Measured by Influenza Plaque Assay (Replicating Virus)

Influenza viral load will be measured by the influenza plaque assay (replicating virus).

Time frame:
Baseline; Day 4; Day 7; Day 10
Reported as:
Number · PFU per mL
Difference in Change of Influenza Viral Loads From Baseline at Day 4, 7 and 10 Between the Two Treatment Arms as Measured by Influenza Plaque Assay (Replicating Virus)
PFU per mLActive and Standard of CarePlacebo and Standard of Care
Baseline—2300000
Day 4—800
Day 7—1300
Day 10—0
SecondaryTime to Improvement of Individual Influenza Symptoms as Assessed by Patient-reported Outcome Measures on a Single Scale

Patients will self-assess the severity of 7 influenza-associated symptoms on a 4-point single scale with 0 indicating no symptoms and higher scores indicating mild, moderate, and severe symptoms. Time to improvement of individual influenza symptoms are defined as the time from the start of treatment to the time when each of the influenza symptoms are alleviated, maintained, or improved for a duration of at least 21.5 hours. These are defined as: pre-existing symptoms (cough, fatigue, or muscle/join pain that existed prior to influenza) that were worse at baseline and had improved at least 1 point from baseline; pre-existing symptoms not worse at baseline that maintained baseline severity; and new symptoms that were alleviated, defined as a symptom score of non (0) or mild (1).

Time frame:
Baseline to Day 30
Reported as:
Number · Days to recovery
Time to Improvement of Individual Influenza Symptoms as Assessed by Patient-reported Outcome Measures on a Single Scale
Days to recoveryActive and Standard of CarePlacebo and Standard of Care
Time to Improvement of Individual Influenza Symptoms as Assessed by Patient-reported Outcome Measures on a Single Scale—8
SecondaryPercentage of Patients Who Experience Each Influenza-related Complications: Hospitalization, Death, Sinusitis, Otitis Media, Bronchitis, and Radiologically-confirmed Pneumonia as an Adverse Event After the Initiation of Study Treatment

A composite score of multiple measures will be used and calculated by count of patients who experience each influenza-related complications. Adverse events will only include those that are determined to be related to the study drug.

Time frame:
Day 1 to Day 30
Reported as:
Number · Number of patients with complications.
Percentage of Patients Who Experience Each Influenza-related Complications: Hospitalization, Death, Sinusitis, Otitis Media, Bronchitis, and Radiologically-confirmed Pneumonia as an Adverse Event After the Initiation of Study Treatment
Number of patients with complications.Active and Standard of CarePlacebo and Standard of Care
Percentage of Patients Who Experience Each Influenza-related Complications: Hospitalization, Death, Sinusitis, Otitis Media, Bronchitis, and Radiologically-confirmed Pneumonia as an Adverse Event After the Initiation of Study Treatment—0
SecondaryTime to Return to Preinfluenza Health Status

Preinfluenza health status will be measured on a score from 0 (worst possible health) to 10 (normal health \[for someone your age and condition\]).

Time frame:
Day 1 to Day 30
Reported as:
Number · Days
Time to Return to Preinfluenza Health Status
DaysActive and Standard of CarePlacebo and Standard of Care
Time to Return to Preinfluenza Health Status—8
SecondaryTime to Viral Clearance, as Assessed by Difference in Percentage of Participants Positive by Influenza Plaque Assay at Each Time-point (in Each Treatment Group)

Time to viral clearance will be assessed by percentage of participants positive by influenza plaque assay at each time-point.

Time frame:
Baseline to Day 30
Reported as:
Number · Days
Time to Viral Clearance, as Assessed by Difference in Percentage of Participants Positive by Influenza Plaque Assay at Each Time-point (in Each Treatment Group)
DaysActive and Standard of CarePlacebo and Standard of Care
Time to Viral Clearance, as Assessed by Difference in Percentage of Participants Positive by Influenza Plaque Assay at Each Time-point (in Each Treatment Group)—8
SecondaryTime to Viral Clearance, as Assessed by Difference in Percentage of Participants Positive by Quantitative Real Time Polymerase Chain Reaction

Time to viral clearance will be assessed by percentage of participants positive by qPCR at each time-point.

Time frame:
Baseline to Day 30
Reported as:
Number · Days
Time to Viral Clearance, as Assessed by Difference in Percentage of Participants Positive by Quantitative Real Time Polymerase Chain Reaction
DaysActive and Standard of CarePlacebo and Standard of Care
Time to Viral Clearance, as Assessed by Difference in Percentage of Participants Positive by Quantitative Real Time Polymerase Chain Reaction—8
SecondaryChange of Treatment-emergent Variants of Neuraminidase and Polymerase Known to Confer Antiviral Resistance to Oseltamivir in Each Arm by Direct Next-generation Sequencing Symptoms

Treatment-emergent variants will be identified using direct next-generation sequencing of a comprehensive panel of genes.

Time frame:
Baseline to Day 30
Reported as:
Number · Resistant variant
Change of Treatment-emergent Variants of Neuraminidase and Polymerase Known to Confer Antiviral Resistance to Oseltamivir in Each Arm by Direct Next-generation Sequencing Symptoms
Resistant variantActive and Standard of CarePlacebo and Standard of Care
Change of Treatment-emergent Variants of Neuraminidase and Polymerase Known to Confer Antiviral Resistance to Oseltamivir in Each Arm by Direct Next-generation Sequencing Symptoms—0
SecondaryPercentage of Participants With Adverse Events (AEs)

Adverse events will only include those that are determined to be related to the study drug and will assess the safety and tolerability of Baloxavir in Combination with SOC treatment.

Time frame:
Day 1 to Day 15
Reported as:
Count of participants · Participants
Percentage of Participants With Adverse Events (AEs)
ParticipantsActive and Standard of CarePlacebo and Standard of Care
Percentage of Participants With Adverse Events (AEs)—1

Adverse events

Collected over 1 month. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Active and Standard of Care———
Placebo and Standard of Care1/2 (50%)1/2 (50%)1/2 (50%)
Most frequent serious events
Most frequent serious events
EventActive and Standard of CarePlacebo and Standard of Care
renal insufficiencyRenal and urinary disorders—1/2
Most frequent other events
Most frequent other events
EventActive and Standard of CarePlacebo and Standard of Care
alopeciaSkin and subcutaneous tissue disorders—1/2

Baseline characteristics

Participants were not analyzed in the Active and Standard of Care arm because 0 participants were enrolled in that arm.

Age, Continuous
Age, Continuous(years)Active and Standard of CarePlacebo and Standard of CareTotal
Mean—45 ± 3045 ± 30
Sex: Female, Male
Sex: Female, Male(Participants)Active and Standard of CarePlacebo and Standard of CareTotal
Female011
Male011
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Active and Standard of CarePlacebo and Standard of CareTotal
Hispanic or Latino—11
Not Hispanic or Latino—11
Unknown or Not Reported—00
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Active and Standard of CarePlacebo and Standard of CareTotal
American Indian or Alaska Native—00
Asian—00
Native Hawaiian or Other Pacific Islander—00
Black or African American—11
White—11
More than one race—00
Unknown or Not Reported—00
08

Study locations

1 site
  • Weill Cornell Medicine
    New York, New York 10065, United States
09

References and documents

Publications

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  • De Vlaminck I, Martin L, Kertesz M, Patel K, Kowarsky M, Strehl C, Cohen G, Luikart H, Neff NF, Okamoto J, Nicolls MR, Cornfield D, Weill D, Valantine H, Khush KK, Quake SR. Noninvasive monitoring of infection and rejection after lung transplantation. Proc Natl Acad Sci U S A. 2015 Oct 27;112(43):13336-41. doi: 10.1073/pnas.1517494112. Epub 2015 Oct 12. PubMed 26460048 ↗
  • De Vlaminck I, Valantine HA, Snyder TM, Strehl C, Cohen G, Luikart H, Neff NF, Okamoto J, Bernstein D, Weisshaar D, Quake SR, Khush KK. Circulating cell-free DNA enables noninvasive diagnosis of heart transplant rejection. Sci Transl Med. 2014 Jun 18;6(241):241ra77. doi: 10.1126/scitranslmed.3007803. PubMed 24944192 ↗
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  • Lee N, Chan PK, Hui DS, Rainer TH, Wong E, Choi KW, Lui GC, Wong BC, Wong RY, Lam WY, Chu IM, Lai RW, Cockram CS, Sung JJ. Viral loads and duration of viral shedding in adult patients hospitalized with influenza. J Infect Dis. 2009 Aug 15;200(4):492-500. doi: 10.1086/600383. PubMed 19591575 ↗
  • Lee N, Ison MG. Diagnosis, management and outcomes of adults hospitalized with influenza. Antivir Ther. 2012;17(1 Pt B):143-57. doi: 10.3851/IMP2059. Epub 2012 Feb 3. PubMed 22311561 ↗
  • Marty FM, Vidal-Puigserver J, Clark C, Gupta SK, Merino E, Garot D, Chapman MJ, Jacobs F, Rodriguez-Noriega E, Husa P, Shortino D, Watson HA, Yates PJ, Peppercorn AF. Intravenous zanamivir or oral oseltamivir for hospitalised patients with influenza: an international, randomised, double-blind, double-dummy, phase 3 trial. Lancet Respir Med. 2017 Feb;5(2):135-146. doi: 10.1016/S2213-2600(16)30435-0. Epub 2017 Jan 14. PubMed 28094141 ↗
  • Muthuri SG, Venkatesan S, Myles PR, Leonardi-Bee J, Al Khuwaitir TS, Al Mamun A, Anovadiya AP, Azziz-Baumgartner E, Baez C, Bassetti M, Beovic B, Bertisch B, Bonmarin I, Booy R, Borja-Aburto VH, Burgmann H, Cao B, Carratala J, Denholm JT, Dominguez SR, Duarte PA, Dubnov-Raz G, Echavarria M, Fanella S, Gao Z, Gerardin P, Giannella M, Gubbels S, Herberg J, Iglesias AL, Hoger PH, Hu X, Islam QT, Jimenez MF, Kandeel A, Keijzers G, Khalili H, Knight M, Kudo K, Kusznierz G, Kuzman I, Kwan AM, Amine IL, Langenegger E, Lankarani KB, Leo YS, Linko R, Liu P, Madanat F, Mayo-Montero E, McGeer A, Memish Z, Metan G, Mickiene A, Mikic D, Mohn KG, Moradi A, Nymadawa P, Oliva ME, Ozkan M, Parekh D, Paul M, Polack FP, Rath BA, Rodriguez AH, Sarrouf EB, Seale AC, Sertogullarindan B, Siqueira MM, Skret-Magierlo J, Stephan F, Talarek E, Tang JW, To KK, Torres A, Torun SH, Tran D, Uyeki TM, Van Zwol A, Vaudry W, Vidmar T, Yokota RT, Zarogoulidis P; PRIDE Consortium Investigators; Nguyen-Van-Tam JS. Effectiveness of neuraminidase inhibitors in reducing mortality in patients admitted to hospital with influenza A H1N1pdm09 virus infection: a meta-analysis of individual participant data. Lancet Respir Med. 2014 May;2(5):395-404. doi: 10.1016/S2213-2600(14)70041-4. Epub 2014 Mar 19. PubMed 24815805 ↗
  • Paules C, Subbarao K. Influenza. Lancet. 2017 Aug 12;390(10095):697-708. doi: 10.1016/S0140-6736(17)30129-0. Epub 2017 Mar 13. PubMed 28302313 ↗
  • Rothberg MB, Haessler SD. Complications of seasonal and pandemic influenza. Crit Care Med. 2010 Apr;38(4 Suppl):e91-7. doi: 10.1097/CCM.0b013e3181c92eeb. PubMed 19935413 ↗
  • Salvatore M, Laplante JM, Soave R, Orfali N, Plate M, van Besien K, St George K. Baloxavir for the treatment of Influenza in allogeneic hematopoietic stem cell transplant recipients previously treated with oseltamivir. Transpl Infect Dis. 2020 Aug;22(4):e13336. doi: 10.1111/tid.13336. Epub 2020 Jun 10. PubMed 32449254 ↗
  • Taniguchi K, Ando Y, Nobori H, Toba S, Noshi T, Kobayashi M, Kawai M, Yoshida R, Sato A, Shishido T, Naito A, Matsuno K, Okamatsu M, Sakoda Y, Kida H. Inhibition of avian-origin influenza A(H7N9) virus by the novel cap-dependent endonuclease inhibitor baloxavir marboxil. Sci Rep. 2019 Mar 5;9(1):3466. doi: 10.1038/s41598-019-39683-4. PubMed 30837531 ↗

Study documents

  • Protocol and statistical analysis plan · Oct 5, 2023

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Apr 2022 to primary completion in Jan 2024, 20 months.

Results were first posted in Feb 2025, 1 year 1 month after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 9, 2021
First posted
Dec 27, 2021
StartActual
Apr 22, 2022
Primary completionActual
Jan 17, 2024
CompletionActual
Feb 7, 2024
Results first posted
Feb 26, 2025
Last update
Feb 26, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 26, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT05170009
Collaborators
Genentech, Inc.
Responsible party
Sponsor
First posted
Dec 27, 2021
Start date
Apr 22, 2022
Primary completion
Jan 17, 2024
Completion
Feb 7, 2024
Results posted
Feb 26, 2025
Last update
Feb 26, 2025

Study contacts

Mirella Salvatore, MD
principal investigator · Weill Medical College of Cornell University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Feb 2025. You cannot join it, but the record below documents what was studied.

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Discussion

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