ClinicalTrials.gg
CompletedNCT03071003Updated Apr 8, 2019

A Study of SENS 401 in Healthy Subjects

A Phase 1 interventional study of SENS-401 and Placebo in Inner Ear Disease, sponsored by Simbec Research. Completed at 1 site in United Kingdom. Open to participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-04-08.

Sponsored by Simbec Research · Phase 1, Interventional, and Basic science

From the registry’s dates

  • Registered 4 months after the study started (first participant enrolled Oct 2016, registered Feb 2017).
Phase
Phase 1
Study type
Interventional
Enrollment
36
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
All
01

Study summary

Sensorion are the study sponsor and the objective of this study is to investigate the safety and pharmacokinetic (PK) profile of SENS 401 in humans after a single and repeat dose administration and to confirm that, there is no interconversion of the (R) enantiomer to the (S) enantiomer.

The study only involves the one drug, referred to as SENS-401.The key objective is to assess the safety of SENS 401 after multiple doses in healthy subjects.

The population who are eligible to take part in the study are healthy male and female, non-smoking volunteers, aged between 18 and 50 years, as determined by screening tests at Simbec.

Participation in the trial will last for about 3 weeks (from first screening to final end of study visit).

Read the detailed description

This is a randomised, double blind, multiple dose, safety and PK study. Three cohorts of 12 subjects will be administered with three different dose regimens.

Screening assessments will be carried out within 14 days before administration of the investigational medicinal product (IMP). Eligible subjects will be asked to return for the treatment period.

Cohort 1: 12 subjects will receive 29 mg SENS-401 or placebo once daily for 7 days.

Cohort 2: 12 subjects will receive 29 mg SENS-401 or placebo twice daily for 6 days and a single dose of 29 mg SENS-401 or placebo in the morning on Day 7.

Cohort 3: 12 subjects will receive 43.5 mg SENS-401 or placebo twice daily for 6 days and a single dose of 43.5 mg SENS-401 or placebo in the morning on Day 7.

Subjects will be asked to attend Simbec 5-7 days after administration of the last dose for a post study visit. If they are withdrawn from the study, they will still be asked to attend for an end of study assessment. Subjects may be asked to return again if we need to follow them up.

02

Conditions studied

  • Inner Ear Disease

Browse trials for

Keywords

  • Pharmacokinetics
  • Healthy Volunteer Study
03

In context

Labyrinth Diseases

21 studies on the registry are indexed under Labyrinth Diseases; 8 are open to participants now.

This study's enrollment of 36 is close to the median of 37 across 16 interventional studies indexed under Labyrinth Diseases.

Browse Labyrinth Diseases studies →

Lead sponsor

Simbec Research is the lead sponsor of 5 studies on the registry; none are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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. Healthy males and females (non pregnant/non lactating) between 18 and 50 years of age.
  2. Female subject of child bearing potential with a negative pregnancy test at the screening visit and willing to use 2 effective methods of , from first dose until 3 months afterwards (i.e., until 3 months after last SENS-401 dose).
  3. Female subject of non child bearing potential with negative pregnancy test at the screening visit. For the purposes of this study, this is defined as the subject being amenorrheic for at least 12 consecutive months or at least 4 months post surgical sterilisation (including bilateral fallopian tube ligation or bilateral oophorectomy with or without hysterectomy) and levels of follicle stimulating hormone (FSH) falling within the respective pathology reference range. In the event a subject's menopause status has been clearly established (for example, the subject indicates she has been amenorrheic for 10 years), but FSH levels are not consistent with a post menopausal condition, determination of subject eligibility will be at the discretion of the Investigator following consultation with the Sponsor's Responsible Physician.
  4. Male subject willing to use 2 effective methods of contraception, (unless anatomically sterile) from first dose until 3 months afterwards (i.e., until 3 months after last SENS-401 dose).
  5. Subject with a (BMI) of 18 30 kg/m2. If Asians are included, BMI values will be modified to 16-23 kg/m2 (this range is considered as normal in Asian population). BMI = body weight (kg)/height (m)2.
  6. Subject with no abnormal serum biochemistry, haematology and urine examination values within 14 days of the first dose.
  7. Subject with a negative urinary drugs of abuse screen, determined within 14 days of the first dose (a positive alcohol result may be repeated at the discretion of the Investigator).
  8. Subject with negative (HIV), surface antigen (Hep B) and virus antibody (Hep C) results.
  9. Subject with no clinically significant abnormalities in 12 lead (ECG) determined within 14 days of the first dose.
  10. Subject with no clinically significant abnormalities in blood pressure or pulse determined within 14 days of the first dose.
  11. Subject is a non smoker or ex smoker who has not smoked in the last 3 months (determined by urine cotinine \< 500 ng/mL at screening visit).
  12. Subject is available to complete the study (including all follow up visits) and comply with study restrictions.
  13. Subject satisfies a medical examiner about their fitness to participate in the study.
  14. Subject provides written to participate in the study.

Exclusion criteria

Exclusion Criteria:

  1. Subject with a history of gastrointestinal disorder likely to influence drug absorption.
  2. Subject in receipt of regular medication (with the exception of ) within 14 days of the first dose that may have an impact on the safety and objectives of the study (Investigator's discretion).
  3. Subject with evidence of renal, hepatic, central nervous system, respiratory, cardiovascular or metabolic dysfunction.
  4. Subject with any renal (serum creatinine (CREAT) level > 1.5 fold above the (ULN) or liver insufficiency (alkaline phosphatase (ALP) level > 1.2 fold above ULN, gamma glutamyl transferase (GGT), (AST), or alanine transaminase (ALT) level > 2.5 fold above ULN, and total (BIL T) level > 1.5 fold above ULN).
  5. Subject with history of, or family history (immediate relative) of, long syndrome or Torsade de Pointes or symptomatic bradycardia.
  6. Subject with clinically significant history of previous allergy / sensitivity to SENS-218 or its or other 5-hydroxytryptamine (5 HT3) receptor antagonists.
  7. Subject with a clinically significant history of drug or alcohol abuse.
  8. Subject with inability to communicate well with the Investigator (i.e., language problem, poor mental development or impaired cerebral function).
  9. Subject participation in a New Chemical Entity clinical study within the previous 4 months or a marketed drug clinical study within the previous 3 months. (N.B. between studies is defined as the period of time elapsed between the last dose of the previous study and the first dose of the next study).
  10. Subject donated 450 mL or more blood within the previous 3 months.
Terms in these criteria, in plain language(14)

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.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

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.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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.

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.

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.

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.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Washout period

A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.

05

Study design

Phase
Phase 1
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Sequential assignment
Masking
Double (Participant, Investigator)
Enrollment
36 participants (actual)

Study arms

  • Experimental
    Cohort 1 SENS 401 & Placebo

    12 subjects will receive 29 mg SENS-401 (approximately 4 male and 4 female subjects) or placebo (approximately 2 male and 2 female subjects) once daily for 7 days.

    Drug: SENS-401 · Drug: Placebo

  • Experimental
    Cohort 2 SENS 401 & Placebo

    12 subjects will receive 29 mg SENS-401 (approximately 4 male and 4 female subjects) or placebo (approximately 2 male and 2 female subjects) twice daily for 6 days and a single dose of 29 mg SENS-401 or placebo in the morning on Day 7.

    Drug: SENS-401 · Drug: Placebo

  • Experimental
    Cohort 3 SENS 401 & Placebo

    12 subjects will receive 43.5 mg SENS-401 (approximately 4 male and 4 female subjects) or placebo (approximately 2 male and 2 female subjects) twice daily for 6 days and a single dose of 43.5 mg SENS-401 or placebo in the morning on Day 7.

    Drug: SENS-401 · Drug: Placebo

Interventions

  • Oral Administration

  • DrugPlacebo

    Oral Administration

06

What researchers measure

Primary outcomes

  1. Safety of SENS 401 after multiple doses in healthy subjects

    AEs

    Time frame: Throughout the study until post study visit (A period of approximately 4 weeks)

Secondary outcomes

  1. Maximum Plasma Concentration [Cmax]

    Cohort 1, 2 and 3 - Day 1 and Day 7 Cmax

    Time frame: Day 1-9

  2. Area under the curve 0 to 24 [AUC0-24]

    Cohort 1 \[AUC0-12\], Cohort 2 and 3 \[AUC0-24\]

    Time frame: Day 1-9

  3. Interconversion of the (R) enantiomer (SENS-401) and (S)-enantiomer (SENS-219) in human plasma.

    Individual SENS-401,SENS-219 and SENS-218 concentration-time data following administration of SENS-401 will be listed.

    Time frame: Day 1-9

07

Study locations

1 site
  • Simbec Research
    Merthyr Tydfil, CF48 4DR, United Kingdom
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Oct 2016 to primary completion in Mar 2017, 5 months.

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

Registered
Feb 22, 2017
First posted
Mar 6, 2017
StartActual
Oct 21, 2016
Primary completionActual
Mar 21, 2017
CompletionActual
Oct 16, 2017
Last update
Apr 8, 2019
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 Apr 8, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03071003
Lead sponsor
Simbec Research
Collaborators
Sensorion
Responsible party
Robert Adams (Prinicipal Investigator, MBBS, Simbec Research) — Principal investigator
First posted
Mar 6, 2017
Start date
Oct 21, 2016
Primary completion
Mar 21, 2017
Completion
Oct 16, 2017
Last update
Apr 8, 2019

Study contacts

Robert Adams, MBBS
principal investigator · Simbec Research

Oversight

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

Not currently enrolling

This study is completed, as verified in Apr 2019. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: SENS-401

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