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Changes in the amount of palbociclib in the blood when administered concomitant with erythromycin

Effect of the moderate CYP3A4-inhibitor erythromycin on the pharmacokinetics of palbociclib

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2018-004032-29-NL
Enrollment
11
Registered
2018-11-05
Start date
2019-01-23
Completion date
Unknown
Last updated
2021-07-21

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

Conditions

Patients for whom palbociclib is standard of care (breast cancer)

Interventions

Trade Name: Ibrance Pharmaceutical Form: Capsule Trade Name: Erythromycin Pharmaceutical Form: Tablet

Sponsors

Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: • Histological or cytological proof of cancer for which palbociclib is considered standard care; • Age = 18 years; • Able and willing to give written informed consent; • WHO performance status of 0, 1 or 2; • Adequate organ function per judgement of the treating physician; • Able and willing to undergo blood sampling for PK analysis. Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 11 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 11

Exclusion criteria

Exclusion criteria: • Concomitant use of medication(s) which could influence the pharmacokinetics of palbociclib within 14 days or five half-lives of the drug (whichever is shorter) before start of the study, consisting of (but not limited to) CYP3A4-inhibitors/inductors • Women who are pregnant or breast feeding; • Patients with known alcoholism, drug addiction and/or psychiatric of physiological condition which in the opinion of the investigator would impair study compliance; • Palbociclib related side effects that would require a dose reduction per judgement of the treating physician; • Legal incapacity; • QT duration corrected for heart rate > 450 ms or > 480 ms for subjects with bundle branch block.

Design outcomes

Primary

MeasureTime frame
Main Objective: The primary objective of this trial is to study the effect of the moderate CYP3A4 inhibitor erythromycin on the pharmacokinetics of palbociclib, measured as AUC0-24h, Cmax and Cmin.;Secondary Objective: The secondary objective of this trial is to compare the incidence and severity of adverse events with (a week) and without co-administration of the moderate CYP3A4 inhibitor erythromycin, according to CTC-AE v5.0;Primary end point(s): The effect of the moderate CYP3A4 inhibitor erythromycin on the pharmacokinetics of palbociclib, measured as AUC0-24h, Cmax and Cmin.;Timepoint(s) of evaluation of this end point: At Day 7 and Day 21 of the trial

Secondary

MeasureTime frame
Secondary end point(s): The incidence and severity of adverse events with (a week) and without co-administration of the moderate CYP3A4 inhibitor erythromycin, according to CTC-AE v5.0;Timepoint(s) of evaluation of this end point: At Day 7 and Day 21 of the trial

Countries

Netherlands

Contacts

Public ContactSteffie Groenland

The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital

s.groenland@nki.nl

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026