Skip to content

Definitive QT Study With MT-8554

A Phase I, Randomised, Double-blind, Placebo-controlled, Parallel-group Study to Evaluate the Effect of MT-8554 at Two Dose Levels, MT-8554 Low Dose and MT-8554 High Dose, on the QT/QTc Interval in Healthy Adult Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03471130
Acronym
MT-8554 DQT
Enrollment
48
Registered
2018-03-20
Start date
2018-04-23
Completion date
2018-10-19
Last updated
2025-12-17

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

Conditions

Healthy Volunteer

Brief summary

This is a study to definitively assess the effects of MT 8554, adjusted for placebo, on the change of the QT interval corrected for heart rate (HR) using the Fridericia formula (QTcF) from Baseline in healthy adult subjects

Interventions

Oral, 7 days

Oral, 7 days

DRUGPlacebo

Oral, 7 days

Sponsors

Tanabe Pharma America, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Intervention model description

Double blind, placebo controlled

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* 1\. Provide written informed consent to participate in this study. * 2\. Healthy and free from clinically significant illness or disease as determined by medical history, physical examination (PE), laboratory, and other tests at Screening and Admission. * 3\. Male and female subjects, aged 18 to 55 years (inclusive) at Screening. * 4\. A body weight of ≥60 kg male and ≥50 kg female and a body mass index ranging from 18 to 30 kg/m2 (inclusive) at Screening. * 5\. Subjects and partners agree to use contraception throughout the study as detailed in the protocol. * 6\. In the Investigator's opinion, subject is able to understand the nature of the study and any risks involved in participation, and willing to cooperate and comply with the protocol restrictions and requirements.

Exclusion criteria

* 1\. Subjects with PR \>240 ms, QRS ≥120 ms or corrected QT interval (QTc) by Fridericia's correction \>450 ms for males and \>470 ms for females on the Screening ECG, or any clinically significant ECG abnormality, in the opinion of the Investigator. * 2\. Subjects who have a history of cardiac disease or arrhythmias that can cause QTc prolongation. * 3\. Family history of long or short QT syndrome, hypokalaemia, syncope, or Torsades de Pointes. * 4\. Clinically significant (in the opinion of the Investigator) endocrine, thyroid, hepatic (including Gilbert's syndrome), respiratory, gastrointestinal (GI), renal (including estimated glomerular filtration rate \<90 mL/min), cardiovascular disease, or history (within the last 2 years) of any significant psychiatric/psychotic illness disorder (including anxiety, depression and reactive depression). * 5\. Clinically relevant abnormal medical history, physical findings, or laboratory values at Screening or Day -1 that could interfere with the objectives of the study or the safety of the subject, as judged by the Investigator. * 6\. Previously having received MT-8554. * 7\. Participation in more than 3 clinical studies involving administration of an IMP in the previous year, or any study within 12 weeks (or if relevant, 5 half-lives, whichever is longer) prior to the first dose. * 8\. Presence or history of severe adverse reaction or allergy to any medicinal product that is of clinical significance. * 9\. Subjects who have received any prescribed systemic or topical medication within 14 days (or if relevant, 5 half-lives; whichever is longer) prior to the first dose of IMP unless, in the opinion of the Investigator and Sponsor, the medication will not interfere with the study procedures or compromise safety. Subjects who have received slow release medicinal formulations considered to still be active within 14 days (or if relevant, 5 half-lives; whichever is longer) prior to the first dose administration will also be excluded unless, in the opinion of the Investigator and Sponsor, the medication will not interfere with the study procedures or compromise subject safety. * 10\. Subjects who have used any non-prescribed systemic or topical medication (including herbal remedies) within 7 days (or, if relevant, five half-lives; whichever is longer) prior to the first dose of IMP unless, in the opinion of the Investigator and Sponsor, the medication will not interfere with the study procedures or compromise safety. Occasional use of paracetamol (acetaminophen) for mild analgesia is permitted. * 11\. Subjects who have received any medications, including St John's Wort, known to chronically alter drug absorption or elimination processes within 30 days (or if relevant, 5 half lives; whichever is longer) prior to the first dose of IMP unless, in the opinion of the Investigator and Sponsor, the medication will not interfere with the study procedures or compromise safety. * 12\. Subjects with aspartate aminotransferase (AST), alanine aminotransferase (ALT) ≥1.5×upper limit of normal (ULN) or total bilirubin or creatine kinase above the reference range at Screening or Day -1. * 13\. Blood pressure (BP, supine) at Screening or Day -1 outside the range 90 to 140 mmHg (systolic) or 50 to 90 mmHg (diastolic); and pulse rate outside the range of 40 to 100 beats per minute (bpm), confirmed by repeat assessment. Evidence of postural hypotension defined as a decrease of \>20 mmHg in systolic bp or \>10 mmHg in diastolic bp between the supine and standing position, confirmed by repeat assessment. * 14\. Tympanic body temperature at Day -1 that is outside the local reference range, confirmed by repeat assessment. * 15\. Subjects who are pregnant (positive pregnancy test at Screening or Day -1) or lactating. * 16\. Presence or history of lactose intolerance. * 17\. Excessive consumption of food or drink containing caffeine, including coffee, tea, cola, energy drinks or chocolates (\>5 cups of coffee or equivalent per day). * 18\. Presence or history of drug abuse (as defined by Diagnostic and Statistical Manual of Mental Disorders \[DSM-V\] criteria), or a positive urine test for drugs of abuse at Screening or Day 1. * 19\. Presence or history (in the last 2 years) of alcohol abuse, or intake of more than 28 units/224 g of alcohol weekly (for men) or 21 units/168 g of alcohol weekly (for women) or a positive breath test for alcohol at Screening or Day -1. One unit/8 g is equivalent to a half-pint (280 mL) of beer, 1 measure (25 mL) of spirits, or 1 glass (125 mL) of wine. * 20\. Subjects who use tobacco or nicotine-containing products (cigarettes, snuff, chewing tobacco, cigars, pipes, e-cigarettes or nicotine replacement products) within 3 months prior to dosing, or positive urine cotinine test at Screening or Day -1. * 21\. Test positive for hepatitis B surface antigen, hepatitis B core antibody, hepatitis C antibody, or human immunodeficiency virus (HIV) 1 & HIV 2 antibodies at Screening. * 22\. Donate ≥1 units of blood (450 mL) in the 3 months prior to Screening, plasma in the 7 days prior to Screening, platelets in the 6 weeks prior to Screening, or intention to donate blood within 3 months after the last scheduled visit. * 23\. Consumption of food or drink containing Seville oranges, cranberry, liquorice or grapefruit from 7 days prior to Day -1. * 24\. Any surgical or medical condition which might significantly alter the absorption, distribution, metabolism or excretion of drugs; or which may jeopardise the subject in case or participation in the study. The Investigator should be guided by evidence of any of the following histories: 1. Inflammatory bowel syndrome, gastritis, ulcers, GI or rectal bleeding 2. Major GI surgery such as gastrectomy, gastroenterostomy, or bowel resection 3. Clinical evidence of pancreatic injury or pancreatitis

Design outcomes

Primary

MeasureTime frame
Change from baseline in QTcF with placebo adjustmentDays 1 & 7

Secondary

MeasureTime frame
Proportion of subjects with changes to QTcF from Baseline exceeding >60msDays 1 & 7
Change in Heart Rate compared to baselineDays 1 & 7
Change in PR Interval compared to baselineDays 1 & 7
Change in QRS duration compared to baselineDays 1 & 7
Proportion of subjects with changes to QTcF from Baseline exceeding >30msDays 1 & 7

Other

MeasureTime frame
Number of participants with treatment related adverse eventsDays 1 to 9
Plasma concentration of metabolite with respect to timeDays 1 & 7
Plasma concentration of MT-8554 with respect to timeDays 1 & 7

Countries

United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026