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CompletedNCT04051827Updated Jul 28, 2025Results posted

Drug-Drug Interaction Study of TAK-788 and Midazolam in Participants With Advanced Non-small Cell Lung Cancer (NSCLC)

A Phase 1 interventional study of Midazolam and TAK-788 in Carcinoma, Non-Small-Cell Lung and Lung Neoplasms, sponsored by Millennium Pharmaceuticals, Inc.. Completed at 8 sites in 3 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-07-28.

Sponsored by Millennium Pharmaceuticals, Inc. (part of Takeda) · Phase 1, Interventional, and Other

Phase
Phase 1
Study type
Interventional
Enrollment
26
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to characterize the effect of repeated oral administration of TAK-788 160 milligram (mg) once daily on the single oral and intravenous dose pharmacokinetics (PK) of midazolam.

Read the detailed description

The drug being tested in this study is called TAK-788. The study will characterize the effect of repeated oral administration of TAK-788 160 mg on the single oral- and intravenous-dose PK of midazolam, and will assess the safety and tolerability of TAK-788 in participants with advanced NSCLC.

The study will enroll approximately 26 participants. The study will be conducted in 2 parts: Part A (Cycle 1: PK Cycle) and Part B (Cycle 2 to Cycle 24: Treatment Cycles). In Part A, participants will receive midazolam as an oral dose and intravenous infusion, along with oral dose of TAK-788 in a single 30-day cycle. After completion of Part A, eligible participants may enter Part B. In Part B, participants will continue to receive oral dose of TAK-788 that they were receiving and tolerating at the end of Part A in a 28-day treatment cycle for up to 23 cycles of treatment, or until progressive disease (PD), intolerable toxicity, or another discontinuation criterion is met. Based on the opinion of investigator, if a participant continue to experience clinical benefit, treatment with TAK-788 may be continued after PD.

This multi-center trial will be conducted in Australia, Singapore and the Netherlands. The overall time to participate in this study is 3 years. Participants will make multiple visits to the clinic and will be followed up for 30 days after the last dose of study drug for a follow-up assessment.

02

Conditions studied

  • Carcinoma, Non-Small-Cell Lung
  • Lung Neoplasms

Keywords

  • Drug therapy
03

In context

Carcinoma, Non-Small-Cell Lung

7,620 studies on the registry are indexed under Carcinoma, Non-Small-Cell Lung; 1,838 are open to participants now.

This study's enrollment of 26 is below the median of 62 across 6,019 interventional studies indexed under Carcinoma, Non-Small-Cell Lung.

Browse Carcinoma, Non-Small-Cell Lung studies →

Lead sponsor

Millennium Pharmaceuticals, Inc. is the lead sponsor of 178 studies on the registry; none are open to participants now.

Of its 74 completed or terminated interventional studies of FDA-regulated products, 73 (99%) have results posted.

First submitted after Millennium Pharmaceuticals, Inc. became part of Takeda.

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

  1. or cytologically confirmed locally advanced NSCLC in which the participant is not a candidate for definitive therapy; or, the participant has recurrent or (Stage IV) disease.
  2. or intolerant to standard available therapies.
  3. (ECOG) performance status 0 to 1.
  4. Minimum of 3 months or more.
  5. Adequate organ function as defined by the following criteria:

    • Total serum less than or equal to (\<=) 1.5* (ULN) (\<=3*ULN for participants with Gilbert syndrome or if liver function abnormalities are due to underlying )
    • and aspartate aminotransferase \<=2.5*ULN (or \<=5*ULN if liver function abnormalities are due to underlying malignancy)
    • Estimated greater than or equal to (>=) 30 milliliter per minute (mL/min) (calculated by using the Cockcroft-Gault equation)
    • Serum albumin >= 2 gram/deciliter (g/dL)
    • Serum lipase/amylase \<=1.5*ULN; and
    • Serum amylase \<=1.5*ULN unless the increased serum amylase is due to salivary isoenzymes.
  6. Adequate bone marrow function as defined by the following criteria:

    • >=1.5*10\^9 per liter (/L)
    • count >=75*10\^9/L; and
    • >=9.0 g/dL.
  7. Normal on screening (ECG), defined as QT interval with Fridericia's correction (QTcF) of \<= 450 millisecond (msec) in males or \<= 470 msec in females. (as conducted and interpreted in accordance to local institutional practices and confirmed by principal investigator [PI]).
  8. All toxicities from prior anticancer therapy must have resolved to \<= Grade 1 according to the National Cancer Institute (NCI CTCAE) version 5.0 or have resolved to baseline, at the time of first dose of TAK-788. Note: treatment-related Grade 2 or 3 alopecia and treatment-related Grade 2 peripheral neuropathy are allowed if deemed irreversible.
  9. Suitable venous access for study-required blood sampling (that is, including for PK, pharmacodynamics, and clinical laboratory tests).

Exclusion criteria

Exclusion Criteria:

  1. Received a strong or moderate cytochrome P450 3A () inhibitor or strong or moderate CYP3A inducer within 2 weeks prior to the first dose of TAK-788.
  2. Received small-molecule anticancer therapy (including but not limited to cytotoxic chemotherapy and agents) within 2 weeks prior to the first dose of TAK-788.
  3. Received antineoplastic monoclonal antibodies including check point inhibitors within 28 days of the first dose of TAK-788.
  4. Received radiotherapy \<=14 days prior to the first dose of TAK-788. However, participants are allowed to receive any of the following treatments up to 7 days prior to the first dose: (a) Stereotactic radiosurgery (SRS) (b) stereotactic body radiation therapy (SBRT) or (c) palliative radiation outside the chest and brain.
  5. Major surgery within 28 days prior to the first dose of TAK-788. Minor surgical procedures, such as catheter placement or minimally invasive , are allowed.
  6. Diagnosed with another primary other than NSCLC except for adequately treated non-melanoma skin cancer or cervical cancer in situ; definitively treated non- prostate cancer; or another primary malignancy and is definitively relapse-free with at least 3 years elapsed since the diagnosis of the other primary malignancy.
  7. Have known active (have either previously untreated intracranial central nervous system (CNS) metastases or previously treated intracranial CNS metastases with radiologically documented new or progressing CNS lesions). Brain metastases are allowed if they have been treated with surgery and/or radiation and have been stable without requiring to control symptoms within 7 days before the first dose of TAK-788, and have no evidence of new or enlarging brain metastases.
  8. Current spinal cord compression (symptomatic or asymptomatic and detected by radiographic imaging) or (symptomatic or asymptomatic).
  9. Have uncontrolled hypertension. Participants with hypertension should be under treatment on study entry to control blood pressure.
  10. Significant, uncontrolled, or active cardiovascular disease, including, but not limited to the following:

    • Myocardial infarction within 6 months prior to the first dose of study drug;
    • Unstable angina within 6 months prior to the first dose of study drug;
    • Congestive heart failure within 6 months prior to the first dose of study drug. Cardiac \<50% by echocardiogram (ECHO) or multiple gated acquisition scan (MUGA);
    • History of (as determined by the treating physician) atrial arrhythmia;
    • Any history of ventricular arrhythmia; or
    • Cerebrovascular accident or within 6 months prior to the first dose of study drug.
  11. Treatment with medications known to be associated with the development of torsades de pointes.
  12. Gastrointestinal illness or disorder that could affect oral absorption of TAK-788 or midazolam.
Terms in these criteria, in plain language(25)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Leptomeningeal disease

Cancer that has spread to the leptomeninges, the thin layers covering the brain and spinal cord, and the fluid between them. It is not the same as brain metastases.

Criteria often treat it separately, and many studies leave it out even where treated brain metastases are allowed.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

TIA (transient ischaemic attack)

A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.

Stroke symptoms need emergency care at once, even if they go away.

05

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
26 participants (actual)

Study arms

  • Experimental
    Part A: Midazolam + TAK-788

    Midazolam 3 mg, solution, orally, once on Days 1 and 24 and midazolam 1 mg, infusion, intravenously, once on Days 2 and 25 along with TAK-788 160 mg, capsule, orally, once daily from Day 3 through 30 in Cycle 1.

    Drug: Midazolam · Drug: TAK-788

  • Experimental
    Part B: TAK-788

    TAK-788 160 mg, capsules, orally, once daily in a 28-day treatment cycle from Cycle 2 to Cycle 24, or until progressive disease (PD), intolerable toxicity, or another discontinuation criterion is met, whichever is sooner. Eligible participants from Part A may enter into Part B. Based on the investigator's opinion, if a participant continues to experience clinical benefit, treatment with TAK-788 may be continued after PD.

    Drug: TAK-788

Interventions

  • Midazolam Oral Solution and Midazolam Intravenous Infusion.

  • TAK-788 Oral Capsules.

    Also known as: AP32788

06

What researchers measure

Primary outcomes

  1. Part A, Cmax: Geometric Mean Maximum Observed Plasma Concentration (Cmax) for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)

    As planned, this pharmacokinetic (PK) outcome measure was only assessed in Part A.

    Time frame: Cycle 1: Days 1 and 24 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length is equal to [=] 30 days)

  2. Part A, AUC∞: Geometric Mean Area Under the Plasma Concentration-time Curve From Time 0 to Infinity for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)

    As planned, this PK outcome measure was only assessed in Part A.

    Time frame: Cycle 1: Days 1 and 24 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)

  3. Part A, Cmax: Geometric Mean Maximum Observed Plasma Concentration (Cmax) for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)

    As planned, this PK outcome measure was only assessed in Part A.

    Time frame: Cycle 1: Days 2 and 25 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)

  4. Part A, AUC∞: Geometric Mean Area Under the Plasma Concentration-time Curve From Time 0 to Infinity for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)

    As planned, this PK outcome measure was only assessed in Part A.

    Time frame: Cycle 1: Days 2 and 25 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)

  5. Part A, Tmax: Time to Reach the Maximum Plasma Concentration (Cmax) for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)

    As planned, this PK outcome measure was only assessed in Part A for midazolam 3 mg oral solution.

    Time frame: Cycle 1: Days 1 and 24 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)

  6. Part A, Tmax: Time to Reach the Maximum Plasma Concentration (Cmax) for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)

    As planned, this PK outcome measure was only assessed in Part A for midazolam 1 mg intravenous infusion.

    Time frame: Cycle 1: Days 2 and 25 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)

Secondary outcomes

  1. Part A and B: Number of Participants Reporting One or More Treatment-emergent Adverse Events (TEAEs)

    Time frame: Part A:From Day 1 up to 30 days after the last dose of study drug in Cycle 1 (up to 2 months);Part B:From Day 1 of Cycle 2 up to 30 days after the last dose of study drug in Cycle 19 (up to Month 19) (Cycle length, Part A= 30 days; Part B=28 days)

  2. Part A and B: Number of Participants With Clinically Significant Change From Baseline in Laboratory Values

    The clinically significant change from baseline in laboratory values was assessed by the investigator.

    Time frame: Part A: Day 1 of Cycle 1; Part B: Day 1 of every Cycle (Cycle 2 to Cycle 19) (Cycle length, Part A=30 days; Part B =28 days)

  3. Part A and B: Number of Participants With Clinically Significant Change From Baseline in Vital Signs

    Time frame: Part A: Day 1 up to Day 26 in Cycle 1; Part B: Day 1 of every Cycle (Cycle 2 to Cycle 19) (Cycle length, Part A=30 days; Part B =28 days)

07

Results

Posted Apr 12, 2024

Participant flow

Participants took part in the study at 7 investigative sites in Australia, Singapore, and Netherlands from 23 December 2019 to 07 December 2021.

Participant flow — Overall Study
MilestoneParts A and B: Midazolam + Mobocertinib
Started26
Completed0
Not completed26
Withdrew: Death1
Withdrew: Withdrawal by subject4
Withdrew: Progressive disease16
Withdrew: Physician decision1
Withdrew: Other4

Outcome measures

PrimaryPart A, Cmax: Geometric Mean Maximum Observed Plasma Concentration (Cmax) for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)

As planned, this pharmacokinetic (PK) outcome measure was only assessed in Part A.

Time frame:
Cycle 1: Days 1 and 24 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length is equal to [=] 30 days)
Reported as:
Geometric mean · nanogram per milliliter (ng/mL)
Part A, Cmax: Geometric Mean Maximum Observed Plasma Concentration (Cmax) for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)
nanogram per milliliter (ng/mL)Part A: Midazolam AlonePart A: Midazolam + Mobocertinib
Part A, Cmax: Geometric Mean Maximum Observed Plasma Concentration (Cmax) for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)17.0 ± 60.217.5 ± 60.7
Statistical analysis
  • Part A: Midazolam Alone vs Part A: Midazolam + Mobocertinib · Geometric mean ratio (gmr): 1.03 · 90% CI 0.739 to 1.42The geometric mean ratio (GMR) of midazolam Cmax on Day 24 (with mobocertinib) versus on Day 1 (without mobocertinib) were calculated.
PrimaryPart A, AUC∞: Geometric Mean Area Under the Plasma Concentration-time Curve From Time 0 to Infinity for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)

As planned, this PK outcome measure was only assessed in Part A.

Time frame:
Cycle 1: Days 1 and 24 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)
Reported as:
Geometric mean · nanogram*hour per milliliter (ng*h/mL)
Part A, AUC∞: Geometric Mean Area Under the Plasma Concentration-time Curve From Time 0 to Infinity for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)
nanogram*hour per milliliter (ng*h/mL)Part A: Midazolam AlonePart A: Midazolam + Mobocertinib
Part A, AUC∞: Geometric Mean Area Under the Plasma Concentration-time Curve From Time 0 to Infinity for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)58.3 ± 61.039.0 ± 61.4
Statistical analysis
  • Part A: Midazolam Alone vs Part A: Midazolam + Mobocertinib · Geometric mean ratio (gmr): 0.676 · 90% CI 0.532 to 0.859The GMR of midazolam AUC∞ on Day 24 (with mobocertinib) versus on Day 1 (without mobocertinib) were calculated.
PrimaryPart A, Cmax: Geometric Mean Maximum Observed Plasma Concentration (Cmax) for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)

As planned, this PK outcome measure was only assessed in Part A.

Time frame:
Cycle 1: Days 2 and 25 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)
Reported as:
Geometric mean · ng/mL
Part A, Cmax: Geometric Mean Maximum Observed Plasma Concentration (Cmax) for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)
ng/mLPart A: Midazolam AlonePart A: Midazolam + Mobocertinib
Part A, Cmax: Geometric Mean Maximum Observed Plasma Concentration (Cmax) for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)70.8 ± 151.092.2 ± 132.0
Statistical analysis
  • Part A: Midazolam Alone vs Part A: Midazolam + Mobocertinib · Geometric mean ratio (gmr): 1.30 · 90% CI 0.886 to 1.92The GMR of midazolam Cmax on Day 25 (with mobocertinib) versus on Day 2 (without mobocertinib) were calculated.
PrimaryPart A, AUC∞: Geometric Mean Area Under the Plasma Concentration-time Curve From Time 0 to Infinity for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)

As planned, this PK outcome measure was only assessed in Part A.

Time frame:
Cycle 1: Days 2 and 25 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)
Reported as:
Geometric mean · ng*h/mL
Part A, AUC∞: Geometric Mean Area Under the Plasma Concentration-time Curve From Time 0 to Infinity for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)
ng*h/mLPart A: Midazolam AlonePart A: Midazolam + Mobocertinib
Part A, AUC∞: Geometric Mean Area Under the Plasma Concentration-time Curve From Time 0 to Infinity for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)90.4 ± 113.071.6 ± 96.0
Statistical analysis
  • Part A: Midazolam Alone vs Part A: Midazolam + Mobocertinib · Geometric mean ratio (gmr): 0.837 · 90% CI 0.673 to 1.04The GMR of midazolam AUC∞ on Day 25 (with mobocertinib) versus on Day 2 (without mobocertinib) were calculated.
PrimaryPart A, Tmax: Time to Reach the Maximum Plasma Concentration (Cmax) for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)

As planned, this PK outcome measure was only assessed in Part A for midazolam 3 mg oral solution.

Time frame:
Cycle 1: Days 1 and 24 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)
Reported as:
Median · hour
Part A, Tmax: Time to Reach the Maximum Plasma Concentration (Cmax) for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)
hourPart A: Midazolam AlonePart A: Midazolam + Mobocertinib
Part A, Tmax: Time to Reach the Maximum Plasma Concentration (Cmax) for Midazolam Administered Orally With Mobocertinib (Cycle 1 Day 24) and Without Mobocertinib (Cycle 1 Day 1)0.517 (0.467 to 2.00)0.533 (0.250 to 1.00)
PrimaryPart A, Tmax: Time to Reach the Maximum Plasma Concentration (Cmax) for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)

As planned, this PK outcome measure was only assessed in Part A for midazolam 1 mg intravenous infusion.

Time frame:
Cycle 1: Days 2 and 25 pre-dose and at multiple time points (up to 24 hours) post-dose (Cycle length = 30 days)
Reported as:
Median · hour
Part A, Tmax: Time to Reach the Maximum Plasma Concentration (Cmax) for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)
hourPart A: Midazolam AlonePart A: Midazolam + Mobocertinib
Part A, Tmax: Time to Reach the Maximum Plasma Concentration (Cmax) for Midazolam Administered Intravenously With Mobocertinib (Cycle 1 Day 25) and Without Mobocertinib (Cycle 1 Day 2)0.0500 (0.00 to 1.00)0.0500 (0.00 to 0.500)
SecondaryPart A and B: Number of Participants Reporting One or More Treatment-emergent Adverse Events (TEAEs)
Time frame:
Part A:From Day 1 up to 30 days after the last dose of study drug in Cycle 1 (up to 2 months);Part B:From Day 1 of Cycle 2 up to 30 days after the last dose of study drug in Cycle 19 (up to Month 19) (Cycle length, Part A= 30 days; Part B=28 days)
Reported as:
Count of participants · Participants
Part A and B: Number of Participants Reporting One or More Treatment-emergent Adverse Events (TEAEs)
ParticipantsParts A and B: Midazolam + Mobocertinib
Part A and B: Number of Participants Reporting One or More Treatment-emergent Adverse Events (TEAEs)26
SecondaryPart A and B: Number of Participants With Clinically Significant Change From Baseline in Laboratory Values

The clinically significant change from baseline in laboratory values was assessed by the investigator.

Time frame:
Part A: Day 1 of Cycle 1; Part B: Day 1 of every Cycle (Cycle 2 to Cycle 19) (Cycle length, Part A=30 days; Part B =28 days)
Reported as:
Count of participants · Participants
Part A and B: Number of Participants With Clinically Significant Change From Baseline in Laboratory Values
ParticipantsParts A and B: Midazolam + Mobocertinib
Blood creatinine increased7
Amylase increased3
Lipase increased3
SecondaryPart A and B: Number of Participants With Clinically Significant Change From Baseline in Vital Signs
Time frame:
Part A: Day 1 up to Day 26 in Cycle 1; Part B: Day 1 of every Cycle (Cycle 2 to Cycle 19) (Cycle length, Part A=30 days; Part B =28 days)
Reported as:
Count of participants · Participants
Part A and B: Number of Participants With Clinically Significant Change From Baseline in Vital Signs
ParticipantsParts A and B: Midazolam + Mobocertinib
Part A and B: Number of Participants With Clinically Significant Change From Baseline in Vital Signs0

Adverse events

Collected over TEAEs were adverse events that started from Day 1 up to 30 days after the last dose of study drug in Cycle 1 (up to 2 months) for Part A and from Day 1 of Cycle 2 up to 30 days after the last dose of study drug in Cycle 19 (up to Month 19) for Part B (Cycle length, Part A= 30 days and Part B=28 days). Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Parts A and B: Midazolam + Mobocertinib4/26 (15.4%)20/26 (76.9%)26/26 (100%)
Most frequent serious events
Showing 10 of 24
Most frequent serious events
EventParts A and B: Midazolam + Mobocertinib
DiarrhoeaGastrointestinal disorders6/26
DyspnoeaRespiratory, thoracic and mediastinal disorders3/26
DehydrationMetabolism and nutrition disorders2/26
PyrexiaGeneral disorders2/26
VomitingGastrointestinal disorders2/26
ArrhythmiaCardiac disorders1/26
Cerebrovascular accidentNervous system disorders1/26
HaemoptysisRespiratory, thoracic and mediastinal disorders1/26
HypercalcaemiaMetabolism and nutrition disorders1/26
IleusGastrointestinal disorders1/26
Most frequent other events
Showing 10 of 54
Most frequent other events
EventParts A and B: Midazolam + Mobocertinib
DiarrhoeaGastrointestinal disorders25/26
NauseaGastrointestinal disorders17/26
Decreased appetiteMetabolism and nutrition disorders13/26
FatigueGeneral disorders13/26
RashSkin and subcutaneous tissue disorders9/26
VomitingGastrointestinal disorders9/26
Blood creatinine increasedInvestigations7/26
DyspepsiaGastrointestinal disorders7/26
Dry skinSkin and subcutaneous tissue disorders6/26
AnaemiaBlood and lymphatic system disorders5/26

Baseline characteristics

The safety population was defined as all participants who received at least 1 dose of any study drug (mobocertinib or midazolam).

Age, Continuous
Age, Continuous(years)Parts A and B: Midazolam + Mobocertinib
Mean61.7 ± 14.62
Sex: Female, Male
Sex: Female, Male(Participants)Parts A and B: Midazolam + Mobocertinib
Female14
Male12
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Parts A and B: Midazolam + Mobocertinib
Hispanic or Latino0
Not Hispanic or Latino24
Unknown or Not Reported2
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Parts A and B: Midazolam + Mobocertinib
American Indian or Alaska Native0
Asian9
Native Hawaiian or Other Pacific Islander0
Black or African American0
White17
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(Participants)Parts A and B: Midazolam + Mobocertinib
Australia14
Singapore7
Netherlands5
08

Study locations

8 sites
  • Royal North Shore Hospital
    St Leonards, New South Wales 2065, Australia
  • Flinders Medical Centre
    Bedford Park, South Australia 5042, Australia
  • Peninsula and Southeast Oncology
    Frankston, Victoria 3199, Australia
  • Nucleus Network
    Melbourne, Victoria 3004, Australia
  • Netherlands Cancer Institute
    Amsterdam, North Holland 1066 CX, Netherlands
  • Universitair Medisch Centrum Groningen
    Groningen, 9700 RB, Netherlands
  • The National University Cancer Institute - Singapore
    Singapore, 119074, Singapore
  • Raffles Hospital
    Singapore, 188770, Singapore
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No — De-identified individual participant data from this particular study will not be shared as there is a reasonable likelihood that individual patients could be re-identified (due to the limited number of study participants.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 28, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04051827
Responsible party
Sponsor
First posted
Aug 9, 2019
Start date
Dec 23, 2019
Primary completion
Dec 17, 2020
Completion
Dec 7, 2021
Results posted
Apr 12, 2024
Last update
Jul 28, 2025

Study contacts

Study Director
study director · Millennium Pharmaceuticals, Inc.

Oversight

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

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

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Studies of the drug tested here: Mobocertinib

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