Gelesis Granted FDA Clearance to Market PLENITY™ — a New Prescription Aid in Weight Management

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BOSTON–(BUSINESS WIRE)–Gelesis,
a biotechnology company developing first-in-class hydrogel therapeutics
to treat obesity and other chronic diseases related to the
gastrointestinal (GI) tract, today announced that the United States Food
and Drug Administration (FDA) has cleared the Company’s lead product
candidate, PLENITY™ (Gelesis100), as an aid in weight management in
adults with a Body Mass Index (BMI) of 25–40 kg/m2, when used
in conjunction with diet and exercise. A BMI of 25 kg/m2 and
over is the accepted definition of overweight, and a BMI of 30 kg/m2
and above commonly defines obesity.

PLENITY represents a new prescription option for millions of adults.
More than half of the approximately 150 million adults in the U.S. with
a BMI ranging from 25 kg/m2 to 40 kg/m2 are
classified as overweight (BMI 25-30 kg/m2). Until now, many
of them have not had any prescription treatment options. The safety and
efficacy profile of PLENITY makes it well-suited for these individuals.
It is the only prescription weight management product to be cleared for
use by overweight adults with a BMI as low as 25 kg/m2, with
and also without comorbidities such as hypertension, type 2 diabetes or
dyslipidemia. There is no restriction on how long PLENITY can be used to
assist in weight management.

“This FDA clearance is a major milestone for the Gelesis team and our
technology, and we are thrilled to be able to bring this new
prescription product to the millions of people looking for a safe,
validated and convenient treatment option to manage their weight without
surgery or stimulants,” said Yishai Zohar, founder and chief executive
officer of Gelesis. “With PLENITY, Gelesis is introducing a completely
new approach with a unique mechanism of action to aid in weight
management, with efficacy and safety supported by positive data from
large clinical studies.”

PLENITY is administered in the form of capsules taken with water before
lunch and dinner. PLENITY is made by cross-linking two naturally-derived
building blocks – cellulose and citric acid – to create a
three-dimensional hydrogel matrix. The capsules release thousands of
non-aggregating particles that rapidly absorb water in the stomach,
creating small individual gel pieces with the elasticity (firmness) of
plant-based foods (e.g., vegetables) without caloric value. The gel
pieces increase the volume and elasticity of the stomach and small
intestine contents, contributing to a feeling of fullness and inducing
weight loss. This novel, non-stimulant and non-systemic treatment has
been shown in clinical studies to be effective, safe and well-tolerated.

In clinical studies, PLENITY demonstrated a unique combination of
effectiveness combined with a highly favorable safety and tolerability
profile. Data from the PLENITY pivotal study, Gelesis Loss Of Weight
(GLOW), were published recently in the scientific journal Obesity
and that paper was selected as an Editor’s Choice manuscript. Pivotal
data from the GLOW study were also presented in three posters, one
receiving a special recognition award, and an oral presentation at the
Obesity Society Annual Meeting 2018.

“Given the complexity of the disease of obesity and the need for
expanded treatment options, the Obesity Action Coalition is encouraged
to see continued innovation in safe and effective chronic weight
management options. We welcome PLENITY’s addition as a treatment option
for people affected by obesity,” said Joe Nadglowski, president and
chief executive officer of the Obesity Action Coalition.

“More than 150 million Americans struggle with excess or unhealthy
weight. Unfortunately, the majority of individuals with weight issues
have important weight-related medical problems. There is no doubt that
making a significant impact on this issue should be America’s number one
public health priority. The scientific data supporting PLENITY’s
positive effects on weight make it a powerful tool to help with weight
management. The most compelling aspects of this approach are its
effectiveness, novel mechanism of action and impressive safety data.
This approach creates another arm in the treatment algorithm of weight
management and could be used by an overwhelming majority of people
struggling with weight issues,” said Ken Fujioka, M.D., a weight loss
expert, endocrinology researcher at Scripps Clinic and scientific
advisor to Gelesis.

Gelesis plans to initiate a targeted U.S. launch of PLENITY in the
second half of 2019 and anticipates PLENITY will be broadly available by
prescription in the U.S. in 2020.

Clinical studies of PLENITY
PLENITY and its prototypes have
been studied across five clinical studies throughout the United States,
Canada, and Europe. PLENITY, along with diet and exercise, helps to
induce weight loss through increased satiety and reduced hunger, leading
to a reduction in caloric intake. Throughout its clinical program,
PLENITY has demonstrated a consistently strong safety and efficacy
profile.

PLENITY was recently evaluated in a multicenter, double-blind,
placebo-controlled pivotal study designed to assess change in body
weight in 436 adults with overweight or obesity (BMI ≥ 27 and ≤ 40 kg/m2)
after six months of treatment. The study had two predefined co-primary
endpoints: at least 35% of patients taking PLENITY achieving ≥ 5% weight
loss (categorical endpoint) and placebo-adjusted weight loss with a
super-superiority margin of 3%. In addition, a prespecified analysis of
simple superiority was also performed. The study met and exceeded the
predefined categorical endpoint, with 59% of adults in the treatment
group achieving weight loss of 5% or greater. As previously announced,
the study did not meet the 3% super-superiority endpoint but
demonstrated superiority of the PLENITY treatment over the placebo group
(–6.4% vs. –4.4%, P=0.0007). PLENITY-treated individuals had twice the
odds of achieving at least 5% weight loss vs. placebo (adjusted odds
ratio [OR]: 2.0, P=0.0008).

In addition, 26% of the adults who completed the treatment with PLENITY
were “super-responders,” defined as achieving at least 10% weight loss.
These super-responders achieved an average of about 14% weight loss or
approximately 30 pounds.

The overall incidence of adverse events (AEs) in the PLENITY treatment
group was no different than placebo. The most common treatment related
adverse events (TRAEs) were gastrointestinal disorders (158 TRAEs in 84
[38%] subjects in the PLENITY arm, compared to 105 events in 58 [28%]
subjects receiving placebo), infections and infestations (2 events in 2
[1%] subjects with PLENITY and 1 events in 1 [1%] subjects with
placebo), and musculoskeletal and connective tissue disorders (3 events
in 2 [1%] subjects with PLENITY and 0 in 0 [0%] subjects with placebo).
There were no serious adverse events (SAE) in the PLENITY treatment
group, whereas there was one (1) SAE in the placebo treatment group.

About PLENITY™
PLENITY is an oral, non-systemic,
superabsorbent hydrogel which has received FDA clearance as an aid in
weight management in overweight and obese adults with a BMI of 25–40 kg/m2,
when used in conjunction with diet and exercise. It is made by
cross-linking two naturally derived building blocks, modified cellulose
and citric acid, that create a three-dimensional matrix. PLENITY
particles rapidly absorb water in the stomach and homogenously mix with
ingested foods. Rather than forming one large mass, it creates thousands
of small individual gel pieces with the elasticity (firmness) of solid
plant-based foods (e.g., vegetables) without caloric value. The PLENITY
hydrogel mass increases the volume and elasticity of the stomach and
small intestine contents and induces a feeling of fullness and satiety.
Once it arrives in the large intestine, the hydrogel is partially broken
down by enzymes and loses its three-dimensional structure along with
most of its absorption capacity. The released water is reabsorbed in the
large intestine, and the remaining cellulosic material is expelled in
the feces. PLENITY is considered a medical device because it achieves
its primary intended purpose through mechanical modes of action
consistent with mechanobiology constructs. For more information, visit myplenity.com.

Important Safety Information

  • PLENITY is contraindicated in patients who are pregnant or are
    allergic to cellulose, citric acid, sodium stearyl fumarate, gelatin,
    or titanium oxide
  • PLENITY may alter the absorption of medications. Read Sections 6 and
    8.3 of the Instructions for Use carefully
  • Avoid use in patients with the following conditions: esophageal
    anatomic anomalies, including webs, diverticuli, and rings; suspected
    strictures (such as patients with Crohn’s disease); or complications
    from prior gastrointestinal (GI) surgery that could affect GI transit
    and motility.
  • Use with caution in patients with: active GI conditions such as
    gastro-esophageal reflux disease (GERD), ulcers, or heartburn.
  • Overall, the most common treatment related adverse events (TRAEs) were
    GI-related TRAEs with 38% of adults in the PLENITY group and 28% of
    adults in the placebo group experiencing a GI-related TRAE.
  • The overall incidence of AEs in the PLENITY group was no different
    than the placebo group

Rx Only. For the safe and proper use of PLENITY, refer to the
Instructions for Use.

About Gelesis
Gelesis is developing a novel hydrogel
platform technology to treat overweight and obesity and chronic diseases
related to the GI pathway. Gelesis’ proprietary approach is designed to
act mechanically in the GI pathway to potentially alter the course of
chronic diseases. In April 2019, Gelesis received FDA clearance for its
lead product candidate, PLENITYTM, as an aid for weight
management in overweight and obese adults with a Body Mass Index (BMI)
of 25-40 kg/m2, when used in conjunction with diet and
exercise. Gelesis is preparing to initiate a targeted U.S. launch of
PLENITY in the second half of 2019 and anticipates PLENITY will be
broadly available by prescription in the U.S. in 2020. Additionally,
Gelesis is developing its second candidate, Gelesis200, a hydrogel
optimized for weight loss and glycemic control in patients with type 2
diabetes and prediabetes. Novel hydrogel mechanotherapeutics based on
the Gelesis platform technology are also being advanced through a
pipeline in other GI inflammatory conditions where gut barrier and gut
permeability potentially play a role, such as non-alcoholic
steatohepatitis (NASH) and inflammatory bowel disease (IBD).

The Gelesis executive and advisory team includes some of the world’s
leading experts in obesity, materials science, chronic disease research
and commercialization. Gelesis was co-founded by PureTech Health (LSE:
PRTC), a biopharmaceutical company focused on the Brain-Immune-Gut (BIG)
axis. For more information, visit gelesis.com or
connect with us on Twitter @GelesisInc.

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