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Completed

NCT Number: NCT03008954

Effect of GSP3 on Body Weight in Overweight and Obese Subjects

The FLOW (First Loss Of Weight) study is designed to assess the effects of repeated administration of GSP3, an investigational product, on body weight. It is a multicenter, randomized, double-blind, placebo-controlled, parallel-group, fixed-dose study. FLOW is being conducted in 5 medical centers in Italy, Czech Republic, and Denmark, and will randomize 123 overweight and obese adult males and females to receive either placebo, GSP3 (2.25g), or GSP3 (3.75g) in addition to a hypocaloric diet (-600 kcal/day) for 12 weeks.

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Key information

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Hradec Králové, Hradec, Czechia

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Body Mass Index (BMI) ≥ 27 and ≤ 35 (at least 30% overweight and 30% obese subjects)
  • Ability to follow verbal and written instructions
  • Informed Consent Form signed by the subjects

Exclusion criteria

  • Pregnancy or lactation
  • Absence of medically approved contraceptive methods in females of childbearing potential (e.g., hysterectomy, non-oral contraceptive medications or intrauterine device combined with a barrier method, two combined barrier methods such as diaphragm and condom or spermicide; bilateral tubal ligation and vasectomy are not acceptable contraceptive methods)
  • History of allergic reaction to carboxymethylcellulose, citric acid, modified cellulose, microcrystalline cellulose, and gelatin
  • Administration of investigational products within 1 month prior to Screening Visit
  • Night-shift workers
  • Subjects who stopped smoking within 6 months prior to Screening Visit or considering smoking cessation during the study
  • Subjects anticipating surgical intervention during the study
  • Known type 1 or type 2 diabetes
  • History of eating disorders including binge eating (except mild binge eater)
  • Weight change > 3 kg within 3 months prior to and during the Screening period
  • Supine systolic blood pressure (SBP) > 150 mm Hg and/or supine diastolic blood pressure (DBP) > 90 mm Hg
  • Angina, coronary bypass, or myocardial infarction within 6 months prior to Screening Visit
  • History of gastroesophageal reflux disease
  • History of gastric or duodenal ulcer
  • History of gastroparesis
  • History of gastric bypass or any other gastric surgery
  • History of intragastric balloon
  • History of pancreatitis
  • History of hemorrhoids
  • History of malabsorption
  • Laxative users
  • History of hepatitis B or C
  • History of human immunodeficiency virus
  • History of cancer within the past 5 years (except adequately-treated localized basal cell skin cancer or in situ uterine cervical cancer)
  • Any other clinically significant disease interfering with the assessments of Attiva, according to the Investigator
  • Positive serum or urine pregnancy test(s) in females of childbearing potential
  • Plasma glucose ≥ 126 mg/dL (7.0 mmol/L)
  • Abnormal serum thyrotropin (TSH)
  • Serum triglycerides > 500 mg/dL (5.65 mmol/L)
  • Positive test for drugs in the urine
  • Any relevant biochemical abnormality interfering with the assessments of Attiva, according to the Investigator
  • Anti-obesity medications (including herbal preparations) within 1 month prior to Screening Visit
  • Systemic corticosteroids within 1 month prior to Screening Visit
  • Thyroid hormones or preparations within 1 month prior to Screening Visit (except in subjects on stable dose of replacement therapy for at least 1 month)
  • Any other medication known to cause weight loss or weight gain within 1 month prior to Screening Visit
  • Medications treating hypertension within 1 month prior to Screening Visit
  • Medications treating dyslipidemia within 1 month prior to Screening Visit
  • Anticipated requirement for use of prohibited concomitant medications

Treatment and study plan

GSP3

Device

Each capsule of GSP3 (previously Attiva) contains 700 mg of a mixture of two food-grade materials: carboxymethylcellulose that is cross-linked with citric acid.

Avicel (modified Cellulose)

Dietary Supplement

Each capsule of Avicel contains approximately 350 mg of microcrystalline cellulose

Primary outcomes

  1. Change in Body Weight

    Time frame: Measured at weeks 0,1,2,4,6,8,10,12,13, and follow up (week 14)

    Change from baseline in kilograms and percent (%) weight

Secondary outcomes

  1. Body weight responders

    Time frame: 12 weeks

    Change from baseline in body weight of at least 5%

  2. Change in waist circumference

    Time frame: Measured at weeks 0,1,2,4,6,8,10,12,13, and follow up (week 14)

    Change from baseline in waist circumference (centimeters)

  3. Change in fat mass

    Time frame: Measured at weeks 0 and 13

    Change in percentage (%) of total mas from baseline in fat- and bone-free fat mass measured by dual energy X-ray absorptiometry (DEXA)

  4. Change in bone-free fat mass

    Time frame: Measured at weeks 0 and 13

    Change in percentage (%) of total mas from baseline in fat- and bone-free fat mass measured by dual energy X-ray absorptiometry (DEXA)

  5. Change in appetite (hunger, satiety, and fullness)

    Time frame: Measured at weeks 0,1,2,4,6,8,10,12,13, and follow up (week 14)

    Assessed by self-administered Visual Analog Scale (VAS)

  6. Change in food intake

    Time frame: Measured at weeks 0 and 12

    Assessed by 24 hr dietary recall

Other outcomes

  1. Change in plasma glucose

    Time frame: Measured at baseline and week 13

    Change from baseline in millimoles per liter (mmol/L)

  2. Change in plasma glucose status (normal, impaired, diabetic)

    Time frame: Measured at weeks 0 and 13

  3. Change in serum insulin

    Time frame: Measured at weeks 0 and 13

    Change from baseline in miliunits per liter (mU/L)

  4. Change in insulin resistance

    Time frame: Measured at weeks 0 and 13

    Change from baseline in homeostatic model assessment of insulin resistance (HOMA-IR)

  5. Change in glycosylated hemoglobin (HbA1c)

    Time frame: Measured at weeks 0 and 13

    Measured in percentage (%)

  6. Change in total cholesterol, serum low-density lipoprotein (LDL), high-density lipoprotein (HDL), total cholesterol/HDL ratio, and triglycerides

    Time frame: Measured at weeks 0 and 13

    measured in mg/dL

  7. Change vital signs: heart rate, supine and standing systolic and diastolic blood pressure (SBP, DBP)

    Time frame: Measured at weeks 0,1,2,4,6,8,10,12,13, and follow up (week 14)

    Measured in beats per minute (heart rate) or millimeters of mercury (mmHg) for blood pressure

  8. All adverse events (AE), serious adverse events (SAE), and gastrointestinal symptoms

    Time frame: Measured at weeks 0,1,2,4,6,8,10,12,13, and follow up (week 14)

    Number and % of subjects with AE/SAEs spontaneously reported; gastrointestinal symptoms solicited via questionnaire

  9. Change in serum sodium

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline in millimoles per liter (mmol/L)

  10. Change in serum potassium

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (mmol/L)

  11. Change in serum coloride

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (mmol/L)

  12. Change in serum calcium

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (mmol/L)

  13. Change in serum magnesium

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (mmol/L)

  14. Change in serum phosphorus

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (mmol/L)

  15. Change in serum glucose

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (mmol/L)

  16. Change in blood urea nitrogen (BUN)

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (mmol/L)

  17. Change in serum creatinine

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline in micromoles per liter (umol/L)

  18. Change in serum uric acid

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (umol/L)

  19. Change in total bilirubin

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (umol/L)

  20. Change in alanine aminotransferase (ALT)

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline in international units per liter (IU/L)

  21. Change in aspartate transaminase (AST)

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (IU/L)

  22. Change in gamma-glutamyl transpeptidase (GGT)

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (IU/L)

  23. Change in alkaline phosphatase (ALP)

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (IU/L)

  24. Change in serum total protein

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline in grams per liter (g/L)

  25. Change in serum albumin

    Time frame: Measured at weeks 0,4,8,12,13 and follow up (week 14)

    Change from baseline (g/L)

  26. Change in hematocrit

    Time frame: Measured at weeks 0,4,8,12,13 and follow-up (week 14)

    Change from baseline (%)

  27. Change in hemoglobin

    Time frame: Measured at weeks 0,4,8,12,13 and follow-up (week 14)

    Change from baseline (%)

Sponsors and collaborators

Lead sponsor

Gelesis, Inc.

Industry

Registry information

Official study title

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study Assessing the Effect of GSP3 on Body Weight in Overweight and Obese Subjects

Acronym: FLOW

Important dates

Study start
2012
Primary completion
2013
Study completion
2013
First posted
Jan 4, 2017
Registry last updated
May 15, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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