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Pharmacokinetics of Omadacycline in Cystic Fibrosis

Pharmacokinetics of Omadacycline in Patients With Cystic Fibrosis

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04460586
Enrollment
9
Registered
2020-07-07
Start date
2021-07-01
Completion date
2023-12-31
Last updated
2026-05-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cystic Fibrosis

Brief summary

The purpose of this study is to characterize the pharmacokinetics of intravenous and oral omadacycline in patients with cystic fibrosis.

Detailed description

Omadacycline exhibits excellent activity against bacteria including methicillin-resistant Staphylococcus aureus (MRSA), Burkholderia cepacia, and Nontuberculous mycobacteria (NTM) that are a potential source of lung infection in CF patients. As omadacycline demonstrates antimicrobial activity against a number of pathogens in CF, the investigators hope to learn the optimal dose of omadacycline necessary to treat lung infections in patients with CF in the future. The study hypothesis is that omadacycline will exhibit good oral bioavailability in patients with CF.

Interventions

Participants will receive single dose of omadacycline 100mg IV followed by a 1-week washout and receipt of single dose omadacycline 300 mg PO.

DRUGOmadacycline Oral Tablet [Nuzyra]

Participants will receive single dose of omadacycline 100mg IV followed by a 1-week washout and receipt of single dose omadacycline 300 mg PO.

Sponsors

Paul Beringer
Lead SponsorOTHER
Paratek Pharmaceuticals Inc
CollaboratorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Intervention model description

A single group of patients with CF will receive a single dose of omadacycline 100mg IV followed by a 1-week washout and receipt of 300 mg PO.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Diagnosis of CF based on positive sweat chloride or known CF mutation * Age \>=18 years

Exclusion criteria

* Presence of an ongoing acute pulmonary exacerbation defined based on clinical signs \& symptoms and an acute decline in relative FEV1 of 10% or greater. * Pregnancy or breastfeeding * Serious past allergy to a tetracycline antibiotic * No alcohol, nicotine, or caffeine-containing products during the study period * Hemoglobin \< 8 g/dL

Design outcomes

Primary

MeasureTime frameDescription
Cmax3 DaysTo assess the maximum concentration of omadacycline after single dose of oral and intravenous administration.
Tmax3 daysTo assess the time to maximum concentration of omadacycline after single dose of oral and intravenous administration.
AUC3 daysTo assess the area under the plasma concentration time curve extrapolated to infinity of omadacycline after single dose of oral and intravenous administration.
Absolute Bioavailability6 daysTo determine the absolute bioavailability (%) of omadacycline following single dose of IV and PO administration.

Countries

United States

Contacts

STUDY_DIRECTORAdupa P Rao, M.D.

Keck Medicine of USC

Baseline characteristics

Characteristic
Age, Continuous39.11 years
STANDARD_DEVIATION 11.37
Body Mass Index (BMI)25.55 kg/m^2
STANDARD_DEVIATION 5.12
Forced expiratory volume in 1 second (FEV1)71.3 percent (%) predicted
STANDARD_DEVIATION 14.2
Race/Ethnicity, Customized
Black or African American
1 Participants
Race/Ethnicity, Customized
Hispanic or Latino
3 Participants
Race/Ethnicity, Customized
White, non-Hispanic
5 Participants
Sex: Female, Male
Female
3 Participants
Sex: Female, Male
Male
6 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 90 / 9
other
Total, other adverse events
2 / 91 / 9
serious
Total, serious adverse events
0 / 90 / 9

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 9, 2026