CClinicalTrials.gg
CompletedNCT05857566Updated Nov 18, 2023

Effect of RDX-002 on Postprandial Triglycerides in Subjects Treated With Olanzapine

A Phase 1 interventional study of RDX-002 in Drug-induced Weight Gain, sponsored by Response Pharmaceuticals. Completed at 1 site in United States. Open to participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-11-18.

Sponsored by Response Pharmaceuticals · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Jul 2023, 3 years 2 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
24
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
All
01

Study summary

This Phase 1b Study RDX-002-22-09 has been planned to evaluate the effect of RDX-002 on postprandial triglycerides and ApoB48 levels in normal healthy subjects treated with the atypical antipsychotic drug, olanzapine.

Read the detailed description

This Phase 1b Study RDX-002-22-09 has been planned to evaluate the effect of RDX-002 on postprandial triglycerides and ApoB48 levels in normal healthy subjects treated with the atypical antipsychotic drug, olanzapine. It is a randomized, open-label, parallel group study that will be conducted at a single study site in the US. Normal, healthy subjects aged 18-50 years and with a body mass index (BMI) of 18-27.5 kg/m2 will be eligible for screening. Screening (Day -28) will begin approximately 28 days prior to Baseline (Day 1). Subjects will be admitted to the clinical research unit (CRU) on the morning of Day -1 and will remain in the CRU until discharge on Day 16.

02

Conditions studied

  • Drug-induced Weight Gain

Browse trials for

03

In context

Weight Gain

405 studies on the registry are indexed under Weight Gain; 52 are open to participants now.

This study's enrollment of 24 is below the median of 83 across 324 interventional studies indexed under Weight Gain.

Browse Weight Gain studies →

Lead sponsor

Response Pharmaceuticals is the lead sponsor of 7 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

Inclusion criteria

  • A glycated hemoglobin (HbA1c) level of \<5.7% at Screening
  • A 12-lead electrocardiogram (ECG) at Screening which, in the opinion of the Investigator, had no abnormalities that compromised safety in this study
  • Hematology, clinical chemistry and urinalysis at Screening, the results of which fall within normal parameter ranges and/or are deemed clinically acceptable by the Investigator Exclusion Criteria
  • Males and nonpregnant, nonlactating females

Exclusion criteria

Exclusion Criteria:

  • Any prior use of or contraindication to atypical antipsychotics
  • Concomitant use of drugs known to impact the PK of olanzapine
  • Type 1 or Type 2 diabetes
  • Recent CV event
  • Uncontrolled hypertension
  • Fasting triglycerides ≥400 mg/dL
  • Fasting glucose ≥100 mg/dL
  • Any condition that impacts the absorption of dietary fats
  • Significant gastrointestinal disorders
  • Gall bladder disease
  • Uncontrolled hypothyroidism
  • Liver disease or dysfunction
  • Renal disease or dysfunction
  • Gastrointestinal conditions
  • Hematologic disorders
  • Active malignancy
  • Psychiatric disorder
  • History of drug or alcohol abuse
  • Pregnant, breastfeeding, or intending to become pregnant
  • Use of weight loss products
  • Blood donation or loss within 30 days prior to Screening
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
24 participants (actual)

Study arms

  • Experimental
    RDX-002

    50 mg oral tablet; 200 mg BID for 7 days

    Drug: RDX-002

  • Other
    Olanzapine

    10 mg oral tablet; 10 mg QD for 14 days

    Drug: RDX-002

Interventions

  • DrugRDX-002

    A potent, selective, and gut-specific microsomal triglyceride transfer protein (MTP) inhibitor.

06

What researchers measure

Primary outcomes

  1. Triglyceride and apolipoprotein B48 (ApoB48)

    Efficacy of treatment with RDX-002 on postprandial triglyceride levels and apolipoprotein B48 (ApoB48) levels in normal healthy volunteers treated with 10 mg olanzapine.

    Time frame: 7 days

Secondary outcomes

  1. Triglyceride Level

    Evaluate the effect of treatment with 10 mg olanzapine on postprandial triglyceride levels and ApoB48 levels in normal healthy volunteers

    Time frame: 7 days

  2. Cmax

    Assess the effect of RDX-002 dosing on the steady-state pharmacokinetics (PK) of olanzapine

    Time frame: 7 days

  3. Fasting Lipids

    Assess the effects of olanzapine and olanzapine with RDX-002 on fasting lipids

    Time frame: 7 days

  4. AUC

    Assess the effect of RDX-002 dosing on the steady-state pharmacokinetics (PK) of olanzapine

    Time frame: 7 days

  5. t1/2

    Assess the effect of RDX-002 dosing on the steady-state pharmacokinetics (PK) of olanzapine

    Time frame: 7 days

07

Study locations

1 site
  • Nucleus Network
    Saint Paul, Minnesota 55114, United States
08

References and documents

Individual participant data

Plan to share: No — No sharing of IPD with other researchers.

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 18, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05857566
Lead sponsor
Response Pharmaceuticals
Responsible party
Sponsor
First posted
May 12, 2023
Start date
May 16, 2023
Primary completion
Jul 13, 2023
Completion
Sep 13, 2023
Last update
Nov 18, 2023

Study contacts

Tricia Stamp, PhD, PA-C
principal investigator · Nucleus Network

Oversight

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

Not currently enrolling

This study is completed, as verified in Nov 2023. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion