Prader Willi Syndrome - Pipeline Insight, 2025

DelveInsight’s, “Prader Willi Syndrome - Pipeline Insight, 2025” report provides comprehensive insights about 10+ companies and 15+ pipeline drugs in Prader Willi Syndrome pipeline landscape. It covers the pipeline drug profiles, including clinical and nonclinical stage products. It also covers the therapeutics assessment by product type, stage, route of administration, and molecule type. It further highlights the inactive pipeline products in this space.

Geography Covered

• Global coverage

Prader Willi Syndrome: Understanding

Prader Willi Syndrome: Overview

Prader-Willi syndrome (PWS) is a genetic multisystem disorder characterized during infancy by lethargy, diminished muscle tone (hypotonia), a week suck and feeding difficulties with poor weight gain and growth and other hormone deficiency. In childhood, features of this disorder include short stature, small genitals and an excessive appetite. Affected individuals do not feel satisfied after completing a meal (satiety). Without intervention, overeating can lead to onset of life-threatening obesity. The food compulsion requires constant supervision. Individuals with severe obesity may have an increased risk of cardiac insufficiency, sleep apnea, diabetes, respiratory problems and other serious conditions that can cause life-threatening complications.

PWS is a complex genetic disorder characterized by a range of physical, cognitive, and behavioral symptoms that evolve throughout life. In infancy, signs include hypotonia (poor muscle tone), weak sucking reflexes leading to feeding difficulties, and distinctive facial features such as almond-shaped eyes and a thin upper lip. As children grow, hyperphagia (insatiable appetite) develops, often resulting in chronic overeating and obesity if not managed. PWS arises from the loss of function of genes in the 15q11.2-q13 region of chromosome 15, typically due to paternal microdeletions, maternal uniparental disomy, or imprinting defects. This affects the SNORD116 cluster, disrupting RNA regulation and protein synthesis. Hypothalamic dysfunction leads to hormonal imbalances, including growth hormone deficiency, hypogonadism, and dysregulated appetite control, causing hyperphagia and obesity. These genetic and hormonal disruptions drive the diverse neurobehavioral, endocrine, and physical manifestations of PWS.

Prader-Willi Syndrome is diagnosed through a combination of clinical observation and genetic testing. In infants, the primary indicator is hypotonia, characterized by poor muscle tone, which is often accompanied by feeding difficulties and poor growth. For children under three, diagnosis requires at least four major criteria and one minor criterion from a specified list, while those over three need five major and three minor criteria. Major criteria include symptoms like rapid weight gain, excessive eating, and characteristic facial features, while minor criteria encompass behavioral issues and sleep disturbances. Genetic testing, particularly methylation analysis, confirms the diagnosis by identifying chromosomal abnormalities associated with PWS. Treatment for Prader-Willi Syndrome aims to manage symptoms and improve quality of life. Strict dietary supervision is essential to prevent obesity, while growth hormone therapy enhances growth, muscle mass, and fat reduction. Behavioral therapies and medications address emotional and obsessive-compulsive issues. A multidisciplinary approach involving dietitians, psychologists, and endocrinologists ensures comprehensive care. Regular physical activity supports healthy weight maintenance and overall well-being.

“Prader Willi Syndrome - Pipeline Insight, 2025"" report by DelveInsight outlays comprehensive insights of present scenario and growth prospects across the mechanism of action. A detailed picture of the Prader Willi Syndrome pipeline landscape is provided which includes the disease overview and Prader Willi Syndrome treatment guidelines. The assessment part of the report embraces, in depth Prader Willi Syndrome commercial assessment and clinical assessment of the pipeline products under development. In the report, detailed description of the drug is given which includes mechanism of action of the drug, clinical studies, NDA approvals (if any), and product development activities comprising the technology, Prader Willi Syndrome collaborations, licensing, mergers and acquisition, funding, designations and other product related details.

Report Highlights

• The companies and academics are working to assess challenges and seek opportunities that could influence Prader Willi Syndrome R&D. The therapies under development are focused on novel approaches to treat/improve Prader Willi Syndrome.

Prader Willi Syndrome Emerging Drugs Chapters

This segment of the Prader Willi Syndrome report encloses its detailed analysis of various drugs in different stages of clinical development, including Phase III, Phase II, I, preclinical and Discovery. It also helps to understand clinical trial details, expressive pharmacological action, agreements and collaborations, and the latest news and press releases.

Prader Willi Syndrome Emerging Drugs

• Pitolisant: Harmony Biosciences

Pitolisant, which is being developed by Harmony Biosciences, acts as a high-affinity inverse agonist at the H3 receptor, which normally inhibits histamine synthesis and release. By preventing endogenous histamine from binding to these receptors, pitolisant increases histaminergic activity in the central nervous system, thereby enhancing wakefulness. It also modulates the release of other neurotransmitters, contributing to its stimulating effects without the higher abuse potential associated with traditional stimulants like amphetamines. The drug had received Orphan Drug Designation from the FDA and is currently in Phase III stage of its development for the treatment of Prader-Willi syndrome.

• ARD-101: Aardvark Therapeutics

ARD-101 is shown to be safe and substantially gut-restricted; yet it conveys systemic effects via activation of gut peptide hormone secretion, including GLP-1, GLP-2, and cholecystokinin (CCK). CCK has long been recognized as an interesting pharmaceutical target because its release is triggered with food and helps suppress feelings of hunger. ARD-101 stimulates the release of the body's natural CCK, but primarily targets vagal nerve afferents located near the gut; this in turn induces positive effects on hunger, metabolism, and inflammation through gut-brain signaling. The selective local secretion avoids the off-target side effects seen with approaches using systemic exposure of artificial CCK analogue molecules. Currently, the drug is in Phase II stage of its clinical trial for the treatment of Prader will syndrome.

• CSTI-500: ConSynance Therapeutics

CSTI-500 is First-in-Class, orally administered New Chemical Entity (NCE), Triple Monoamine Reuptake Inhibitor (TRI). By simultaneously inhibiting the reuptake of serotonin, dopamine, and norepinephrine, CSTI-500 can address the often-reduced levels of these neurotransmitters in PWS patients. It is an optimally balanced TRI with unique pharmacological features that allow for predictable and safe titration to an efficacious dose tailored to the individual patient. Currently, the drug is in Phase I stage of its clinical trial for the treatment of Prader-Willi Syndrome.

Further product details are provided in the report……..

Prader Willi Syndrome: Therapeutic Assessment

This segment of the report provides insights about the different Prader Willi Syndrome drugs segregated based on following parameters that define the scope of the report, such as:

• Major Players in Prader Willi Syndrome

There are approx. 10+ key companies which are developing the therapies for Prader Willi Syndrome. The companies which have their Prader Willi Syndrome drug candidates in the most advanced stage, i.e. Phase III include Harmony Biosciences.

Phases

DelveInsight’s report covers around 15+ products under different phases of clinical development like

• Late stage products (Phase III)
• Mid-stage products (Phase II)
• Early-stage product (Phase I) along with the details of
• Pre-clinical and Discovery stage candidates
• Discontinued & Inactive candidates
• Route of Administration

Prader Willi Syndrome pipeline report provides the therapeutic assessment of the pipeline drugs by the Route of Administration. Products have been categorized under various ROAs such as

• Intra-articular
• Intraocular
• Intrathecal
• Intravenous
• Oral
• Parenteral
• Subcutaneous
• Topical
• Transdermal
• Molecule Type

Products have been categorized under various Molecule types such as

• Oligonucleotide
• Peptide
• Small molecule
• Product Type

Drugs have been categorized under various product types like Mono, Combination and Mono/Combination.

Prader Willi Syndrome: Pipeline Development Activities

The report provides insights into different therapeutic candidates in phase II, I, preclinical and discovery stage. It also analyses Prader Willi Syndrome therapeutic drugs key players involved in developing key drugs.

Pipeline Development Activities

The report covers the detailed information of collaborations, acquisition and merger, licensing along with a thorough therapeutic assessment of emerging Prader Willi Syndrome drugs.

Prader Willi Syndrome Report Insights

• Prader Willi Syndrome Pipeline Analysis
• Therapeutic Assessment
• Unmet Needs
• Impact of Drugs

Prader Willi Syndrome Report Assessment

• Pipeline Product Profiles
• Therapeutic Assessment
• Pipeline Assessment
• Inactive drugs assessment
• Unmet Needs

Key Questions

Current Treatment Scenario and Emerging Therapies:

• How many companies are developing Prader Willi Syndrome drugs?
• How many Prader Willi Syndrome drugs are developed by each company?
• How many emerging drugs are in mid-stage, and late-stage of development for the treatment of Prader Willi Syndrome?
• What are the key collaborations (Industry–Industry, Industry–Academia), Mergers and acquisitions, licensing activities related to the Prader Willi Syndrome therapeutics?
• What are the recent trends, drug types and novel technologies developed to overcome the limitation of existing therapies?
• What are the clinical studies going on for Prader Willi Syndrome and their status?
• What are the key designations that have been granted to the emerging drugs?

Key Players

• Harmony Biosciences
• ACADIA Pharmaceuticals
• Jazz Pharmaceuticals
• Aardvark Therapeutics
• ConSynance Therapeutics

Key Products

• Pitolisant
• ACP-101
• Cannabidivarin
• ARD-101
• CSTI-500

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