ClinicalTrials.gg
TerminatedNCT03353220Updated Mar 27, 2024Results posted

Predictors of Lorcaserin-Induced Weight Loss

A Phase 4 interventional study of Belviq and Placebo in Overweight and Obesity, sponsored by Columbia University. Terminated at 1 site in United States. Open to participants aged 18 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-03-27.

Primary conditionObesityRegistry: OverweightReclassifiedWhy we changed it
Registry
Overweight — the first condition term the registry derived for this study.
ClinicalTrials.gg
Obesity
Why
  1. The study's listed conditions name Obesity, a narrower term within Overweight.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Columbia University · Phase 4, Interventional, and Other

Why this study was terminated
The FDA advised of a possible health risk associated with lorcaserin and the drug is being withdrawn.
Phase
Phase 4
Study type
Interventional
Enrollment
32
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 20 studies testing lorcaserin in Obesity — none open to participants now, 1 under way, none of them phase 3. lorcaserin · Obesity.

Enrollment
16th of 20
32 · median 92
Started
2018
the only one that year
Phase 4
6 of 20
none open now
Registered
19th of 20
by date
Lead sponsor
1 of 20
Columbia University

Among the 20 studies testing lorcaserin in Obesity, this one is the 16th largest by enrollment, is the only one that started in 2018, is one of 6 in phase 4, and was the 19th registered.

Obesity

11,522 studies on the registry are indexed under Obesity; 2,033 are open to participants now.

Browse Obesity studies →

Open to participants now

None of the 20 studies testing lorcaserin in Obesity is open now.

About lorcaserin

No approval found in the FDA or EMA files read. How studies give it is on its page →

Who these studies take

Of the 1,336 Obesity studies recruiting now, 377 (28%) set no upper age limit and 856 (64%) stop at 75 or younger; 168 take children under 18; 491 take healthy volunteers.

This study: 18 Years to 60 Years · all sexes · healthy volunteers too.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

Was this useful?
Download CSVNarrow it in search →With an account: the 20 studies testing lorcaserin in Obesity as a file.
02

Study summary

This two-phase study aims to explore ways to predict who will respond well to the weight loss drug lorcaserin and to understand the mechanisms that develop which limit drug efficacy. Subjects will be recruited for a 5-week crossover study (phase 1) with lorcaserin and placebo followed by treatment with lorcaserin for 24 weeks (phase 2).

Read the detailed description

In phase 1, at Weeks 1 and 5, participants will take the weight loss drug lorcaserin or placebo for 7 days. At Week 5 participants will receive whichever treatment they did not receive at Week 1. At the end of Weeks 1 and 5, participants will have a lumbar puncture (spinal tap) to collect cerebrospinal fluid (CSF) for neuropeptide and hormone analyses, including proopiomelanocortin (POMC), Agouti-related protein (AgRP) and cortisol. Blood will also be obtained for neuropeptide and hormone analyses. Breakfast will be served to participants who will then complete an eating behavior profile. A laboratory test meal will be performed 4h after breakfast.

After completing both the 7 day lorcaserin and placebo studies, participants will then continue on Phase 2 of the study, which includes treatment with lorcaserin for 24 weeks. Subjects will receive nutritional counseling to reduce their daily caloric intake to 600 kcal below their calculated caloric requirement and will be encourage to exercise moderately for 30 minutes daily. Participants will visit the clinic monthly during the 24 week study period for nutritional counseling, review of food diaries, vital signs and safely labs. Blood will also be obtained for neuropeptide peptide and hormone analyses. At the end of the 24 week period subjects will come for a final study visit, including a lumbar puncture, blood sample, breakfast, an eating behavior profile and a test meal.

03

Conditions studied

  • Overweight and Obesity

Browse trials for

Keywords

  • Overweight
  • Obesity
  • Weight Loss
  • Lorcaserin
  • Healthy Volunteers
04

In context

Obesity Reclassified

11,522 studies on the registry are indexed under Obesity; 2,033 are open to participants now.

This study's enrollment of 32 is below the median of 67 across 9,006 interventional studies indexed under Obesity.

Browse Obesity studies →

Lead sponsor

Columbia University is the lead sponsor of 1,136 studies on the registry; 195 are open to participants now.

Of its 180 completed or terminated interventional studies of FDA-regulated products, 148 (82%) have results posted.

Compared within Obesity, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Overweight. The counts are of registry records indexed under each term, refreshed daily. How we classify →

05

Who can participate

Ages eligible
18 Years to 60 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

  • (BMI) 28-40

Exclusion criteria

Exclusion Criteria:

  • Any or relevant medical condition, including:
  • Diabetes
  • Uncontrolled Hypertension
  • Heart disease
  • Bleeding disorder
  • Kidney or liver dysfunction
  • Neurologic disease
  • Psychiatric or eating disorders
  • Pregnancy or breastfeeding
  • Use of tobacco or opiates
  • History of alcohol or drug abuse
  • Recent weight change +/- 5%
  • Medications that affect body weight
Terms in these criteria, in plain language(2)

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.

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.

06

Study design

Phase
Phase 4
Primary purpose
Other
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Investigator)
Enrollment
32 participants (actual)

Study arms

  • Experimental
    Arm A

    Participants receive lorcaserin (Belviq) 10 mg twice a day for 7 days followed by a 3 week washout period. These participants will then be crossed over to receive placebo twice a day for 7 days.

    Drug: Belviq · Drug: Placebo

  • Experimental
    Arm B

    Participants receive placebo twice a day for 7 days followed by a 3 week washout period. These participants will then be crossed over to receive lorcaserin (Belviq)10 mg twice a day for 7 days.

    Drug: Belviq · Drug: Placebo

Interventions

  • DrugBelviq

    Belviq is an oral drug

    Also known as: Lorcaserin

  • DrugPlacebo

    The placebo is made to mimic Belviq, but does not contain any active drug

07

What researchers measure

Primary outcomes

  1. Mean Differences in Food Intake During a Laboratory Test Meal After Lorcaserin for One Week Compared to Placebo

    This is designed to measure food Intake (average calories consumed during test meal), in order to determine if long-term lorcaserin induced weight loss is predicted by the short-term differences in calories consumed during the test meal.

    Time frame: First test meal and follow-up test meal (approximately up to 5 weeks)

  2. Mean Differences in POMC Concentrations (Fmol/ml) in CSF After Lorcaserin for One Week Compared to Placebo

    This is designed to measure mean CSF proopiomelanocortin (POMC) concentrations (fmol/ml), in order to determine if long-term lorcaserin induced weight loss can be predicted by differences in CSF POMC concentrations.

    Time frame: Baseline, up to 5 weeks

Secondary outcomes

  1. CSF Concentrations of ß-endorphin

    Mean differences in levels of ß-endorphin, a POMC-derived peptide, in CSF after lorcaserin for one week compared to placebo in order to determine if long-term lorcaserin induced weight loss can be predicted using short-term differences in CSF concentrations of ß-endorphin.

    Time frame: Baseline, up to 5 weeks

  2. Mean Differences in AgRP Concentrations (pg/ml) in CSF After Lorcaserin for One Week Compared to Placebo

    This is designed to measure mean mean Agouti-related protein (AgRP) concentrations (pg/ml) in CSF in blood in order to determine if long-term lorcaserin induced weight loss can be predicted by short-term differences in AgRP concentrations.

    Time frame: Baseline, up to 5 weeks

  3. Mean Differences in AgRP Concentrations (Fmol/ml) in Blood After Lorcaserin for One Week Compared to Placebo

    This is designed to measure mean Agouti-related protein (AgRP) concentrations (fmol/ml) in blood in order to determine if long-term lorcaserin induced weight loss can be predicted by short-term differences in AgRP concentrations.

    Time frame: Baseline, up to 5 weeks

  4. Mean Differences in Cortisol Concentrations (ng/ml) in CSF After Lorcaserin for One Week Compared to Placebo

    This is designed to measure mean Cortisol concentrations (ng/ml) in CSF in order to determine if long-term lorcaserin induced weight loss can be predicted by short-term differences in cortisol concentrations.

    Time frame: Baseline, up to 5 weeks

  5. Insulin Level

    This is designed to determine effects of lorcaserin on glucose homeostasis by measuring changes in insulin levels after 1 week of lorcaserin versus placebo.

    Time frame: Changes in fasting serum insulin after 1 week of lorcaserin compared to placebo.

08

Results

Posted Sep 23, 2021
Limitations and caveats
Study was stopped prematurely during Phase 2 due to lack of drug supply.

Participant flow

First Intervention (7 Days) - Phase 1
Participant flow — First Intervention (7 Days) - Phase 1
MilestoneArm A (LOR-Placebo-LOR)Arm B (Placebo-LOR-LOR)
Started1416
Completed1416
Not completed00
Washout (3 Weeks) - Phase 1
Participant flow — Washout (3 Weeks) - Phase 1
MilestoneArm A (LOR-Placebo-LOR)Arm B (Placebo-LOR-LOR)
Started1416
Completed1416
Not completed00
Second Intervention (7 Days) - Phase 1
Participant flow — Second Intervention (7 Days) - Phase 1
MilestoneArm A (LOR-Placebo-LOR)Arm B (Placebo-LOR-LOR)
Started1416
Completed1416
Not completed00
Third Intervention (6 Months) - Phase 2
Participant flow — Third Intervention (6 Months) - Phase 2
MilestoneArm A (LOR-Placebo-LOR)Arm B (Placebo-LOR-LOR)
Started1416
Completed109
Not completed47
Withdrew: Study was stopped due to unavailable study drug supply47

Outcome measures

PrimaryMean Differences in Food Intake During a Laboratory Test Meal After Lorcaserin for One Week Compared to Placebo

This is designed to measure food Intake (average calories consumed during test meal), in order to determine if long-term lorcaserin induced weight loss is predicted by the short-term differences in calories consumed during the test meal.

Time frame:
First test meal and follow-up test meal (approximately up to 5 weeks)
Reported as:
Mean · kcal
Mean Differences in Food Intake During a Laboratory Test Meal After Lorcaserin for One Week Compared to Placebo
kcalPlaceboLorcaserin
Mean Differences in Food Intake During a Laboratory Test Meal After Lorcaserin for One Week Compared to Placebo919.8 ± 118.7891.9 ± 109.0
Statistical analysis
  • Placebo vs Lorcaserin · t-test, 2 sided · p = 0.65 (paired t test)
PrimaryMean Differences in POMC Concentrations (Fmol/ml) in CSF After Lorcaserin for One Week Compared to Placebo

This is designed to measure mean CSF proopiomelanocortin (POMC) concentrations (fmol/ml), in order to determine if long-term lorcaserin induced weight loss can be predicted by differences in CSF POMC concentrations.

Time frame:
Baseline, up to 5 weeks
Reported as:
Mean · fmol/ml
Mean Differences in POMC Concentrations (Fmol/ml) in CSF After Lorcaserin for One Week Compared to Placebo
fmol/mlPlaceboLorcaserin
Mean Differences in POMC Concentrations (Fmol/ml) in CSF After Lorcaserin for One Week Compared to Placebo256.9 ± 18.5225.0 ± 15.9
Statistical analysis
  • Placebo vs Lorcaserin · t-test, 2 sided · p = 0.0001 (paired t test)
SecondaryCSF Concentrations of ß-endorphin

Mean differences in levels of ß-endorphin, a POMC-derived peptide, in CSF after lorcaserin for one week compared to placebo in order to determine if long-term lorcaserin induced weight loss can be predicted using short-term differences in CSF concentrations of ß-endorphin.

Time frame:
Baseline, up to 5 weeks
Reported as:
Mean · pg/ml
CSF Concentrations of ß-endorphin
pg/mlPlaceboLorcaserin
CSF Concentrations of ß-endorphin49.07 ± 2.655.8 ± 3.2
Statistical analysis
  • Placebo vs Lorcaserin · t-test, 2 sided · p = 0.0017 (paired t test)
SecondaryMean Differences in AgRP Concentrations (pg/ml) in CSF After Lorcaserin for One Week Compared to Placebo

This is designed to measure mean mean Agouti-related protein (AgRP) concentrations (pg/ml) in CSF in blood in order to determine if long-term lorcaserin induced weight loss can be predicted by short-term differences in AgRP concentrations.

Time frame:
Baseline, up to 5 weeks
Reported as:
Mean · pg/ml
Mean Differences in AgRP Concentrations (pg/ml) in CSF After Lorcaserin for One Week Compared to Placebo
pg/mlPlaceboLorcaserin
Mean Differences in AgRP Concentrations (pg/ml) in CSF After Lorcaserin for One Week Compared to Placebo25.9 ± 3.024.2 ± 3.1
SecondaryMean Differences in AgRP Concentrations (Fmol/ml) in Blood After Lorcaserin for One Week Compared to Placebo

This is designed to measure mean Agouti-related protein (AgRP) concentrations (fmol/ml) in blood in order to determine if long-term lorcaserin induced weight loss can be predicted by short-term differences in AgRP concentrations.

Time frame:
Baseline, up to 5 weeks
Reported as:
Mean · pg/ml
Mean Differences in AgRP Concentrations (Fmol/ml) in Blood After Lorcaserin for One Week Compared to Placebo
pg/mlPlaceboLorcaserin
Mean Differences in AgRP Concentrations (Fmol/ml) in Blood After Lorcaserin for One Week Compared to Placebo78.7 ± 7.779.2 ± 7.9
SecondaryMean Differences in Cortisol Concentrations (ng/ml) in CSF After Lorcaserin for One Week Compared to Placebo

This is designed to measure mean Cortisol concentrations (ng/ml) in CSF in order to determine if long-term lorcaserin induced weight loss can be predicted by short-term differences in cortisol concentrations.

Time frame:
Baseline, up to 5 weeks
Reported as:
Mean · pg/ml
Mean Differences in Cortisol Concentrations (ng/ml) in CSF After Lorcaserin for One Week Compared to Placebo
pg/mlPlaceboLorcaserin
Mean Differences in Cortisol Concentrations (ng/ml) in CSF After Lorcaserin for One Week Compared to Placebo5.7 ± 0.226.08 ± 0.33
SecondaryInsulin Level

This is designed to determine effects of lorcaserin on glucose homeostasis by measuring changes in insulin levels after 1 week of lorcaserin versus placebo.

Time frame:
Changes in fasting serum insulin after 1 week of lorcaserin compared to placebo.
Reported as:
Mean · µIU/ml
Insulin Level
µIU/mlPlaceboLorcaserin
Insulin Level20.1 ± 3.2713.2 ± 1.16
Statistical analysis
  • Placebo vs Lorcaserin · t-test, 2 sided · p = 0.0189

Adverse events

Collected over Up to 2 years. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
LOR Time Period0/30 (0%)0/30 (0%)0/30 (0%)
Placebo Time Period0/30 (0%)0/30 (0%)0/30 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Arm A+B (All Participants)
<=18 years0
Between 18 and 65 years32
>=65 years0
Sex: Female, Male
Sex: Female, Male(Participants)Arm A+B (All Participants)
Female28
Male4
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Arm A+B (All Participants)
Hispanic or Latino12
Not Hispanic or Latino20
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Arm A+B (All Participants)
United States32
09

Study locations

1 site
  • Columbia University Medical Center
    New York, New York 10032, United States
10

References and documents

Publications

  • Sideri Gugger A, Dimino C, Panigrahi SK, Mayer L, Smiley RM, Korner J, Wardlaw SL. Defining Predictors of Weight Loss Response to Lorcaserin. J Clin Endocrinol Metab. 2023 Aug 18;108(9):2262-2271. doi: 10.1210/clinem/dgad139. PubMed 36897161 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

11

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jan 2018 to primary completion in Feb 2020, 25 months.

Results were first posted in Sep 2021, 1 year 7 months after primary completion.

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

Registered
Nov 21, 2017
First posted
Nov 27, 2017
StartActual
Jan 3, 2018
Primary completionActual
Feb 14, 2020
CompletionActual
Feb 14, 2020
Results first posted
Sep 23, 2021
Last update
Mar 27, 2024
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 Mar 27, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
12

Registry details

Key details

Study ID
NCT03353220
Responsible party
Sharon Wardlaw (Professor of Medicine, Columbia University) — Principal investigator
First posted
Nov 27, 2017
Start date
Jan 3, 2018
Primary completion
Feb 14, 2020
Completion
Feb 14, 2020
Results posted
Sep 23, 2021
Last update
Mar 27, 2024

Study contacts

Sharon Wardlaw, MD
principal investigator · Columbia University

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 terminated, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Lorcaserin

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