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Rett Syndrome

Rare Diseases
14
Pipeline Programs
16
Companies
31
Clinical Trials
5 recruiting
3
Approved Products

Pipeline by Development Stage

Preclinical
Phase 1
Phase 1/2
Phase 2
Phase 2/3
Phase 3
On Market
0
1
2
3
1
4
3
Early DiscoveryClinical DevelopmentMarket

Drug Modality Breakdown

Peptide
375%
Small Molecule
125%
+ 25 programs with unclassified modality

Rare Diseases is a $21.9B market dominated by a single blockbuster (ELIQUIS), with moderate growth and high consolidation among top-tier pharma players.

$21.9B marketMature→ Stable30 products15 companies

Key Trends

  • Market concentration: One product (ELIQUIS) represents 83% of market spending
  • Complement inhibitors and enzyme replacement therapies gaining momentum
  • Active pipeline with 1,790 trials, predominantly Phase 2-3 stage

Career Verdict

Yes, if you seek stability and commercial opportunity with major pharma; proceed cautiously if you want pipeline upside or innovation-driven roles.

AI-generated market analysis based on FDA, CMS, ClinicalTrials.gov, and hiring data

Market Leaders

#1ELIQUISStable
$18.3B
Bristol Myers Squibb·LAUNCH15.0yr
#2XIFAXANDeclining
$1.1B
Bausch Health·LOE_APPROACHING
#3BRILINTAStable
$692M
AstraZeneca·PEAK10.2yr
#4TYVASO DPIStable
$437M
#5STRENSIQStable
$259M

Drug Class Breakdown

FXa Inhibitors (Anticoagulants)
$18.3B(83%)

Mature, patent-protected until 2041

Unknown Mechanism
$1.4B(6%)

Mixed—includes LOE-approaching products

P2Y12 Receptor Antagonists
$692M(3%)

Peak sales, LOE 2036

Prostaglandins/Vasodilators
$437M(2%)

Stable, long patent protection

Complement Inhibitors
$408M(2%)

Emerging class, no LOE data available

Enzyme Replacement Therapies
$40M(0%)

Niche market, specialized patient populations

Career Outlook

Stable

The rare disease market is stable but mature, with job growth concentrated in commercial and medical affairs rather than R&D innovation. Consolidation among top pharma (AstraZeneca, BMS, Amgen) limits opportunities for mid-tier companies, but specialist biotech firms show hiring momentum. Patent cliff risk for ELIQUIS (2041) will create restructuring opportunities and potential job flux in downstream years.

Breaking In

Target commercial or quality assurance roles at AstraZeneca, Capricor, or Amgen to build market knowledge; rare disease expertise is portable and valued across therapeutic areas.

For Experienced Professionals

Seek regulatory or medical affairs leadership roles where salary ceiling is highest ($243K-$257K); consider biotech firms like Insmed or Krystal for upside if pipeline approvals accelerate.

In-Demand Skills

Market access and HCP engagement (medical affairs)Regulatory and compliance expertisePatient stratification and genetic testing knowledgeCommercial analytics and lifecycle management

Best For

Medical Science Liaison (high salary, growing demand)Commercial Manager/Product Manager (39% of jobs)Regulatory Affairs Specialist (premium salary $257K)Health Economics & Outcomes Research (unmet need in data)

Hiring Landscape

$114K-$257K

Rare disease hiring is concentrated in commercial roles (75 jobs at $215K avg) and medical affairs (16 jobs at $243K avg), reflecting a mature market's focus on market access and HCP engagement. Top hiring companies include AstraZeneca (38 jobs) and emerging biotech players like Capricor Therapeutics (30 jobs). Department salaries range from $114K-$257K, with regulatory affairs commanding premium compensation.

195
Open Roles
5
Companies Hiring
5
Departments

Top Hiring Companies

38Growing
18Stable
17Growing
14Stable

By Department

Commercial(39%)
$215K
Medical Affairs(8%)
$243K
Research & Development(10%)
Regulatory Affairs(4%)
$257K
Quality Assurance(4%)
$168K

Commercial and regulatory roles offer strong salaries and growth; R&D hiring is minimal (10%), reflecting a consolidation and maturity phase in the market.

On Market (3)

Approved therapies currently available

Acadia Pharmaceuticals
DAYBUEApproved
trofinetide
Acadia Pharmaceuticals
oral2023
19M Part D
DELSYMApproved
dextromethorphan
Unknown Company
Uncompetitive N-methyl-D-aspartate Receptor Antagonist [EPC]oral1982
Acadia Pharmaceuticals
DAYBUE STIXApproved
trofinetide
Acadia Pharmaceuticals
oral2025

Competitive Landscape

15 companies ranked by most advanced pipeline stage

Acadia Pharmaceuticals
1 program
1
1
DAYBUE(trofinetide)Phase 3Peptide4 trials
Active Trials
NCT04988867Terminated15Est. May 2023
NCT04776746Terminated77Est. Jun 2023
NCT04279314Completed154Est. Aug 2022
+1 more trials
Human BioSciences
Human BioSciencesWV - Martinsburg
8 programs
1
dextromethorphanPhase 31 trial
Biobanking of Rett Syndrome and Related DisordersN/A1 trial
Development of a Behavioral Outcome Measure for Rett Syndrome (RettBe)N/A1 trial
Genetic and Physical Characteristics of Rett SyndromeN/A
Metabolic assessment with body composition evaluationN/A1 trial
+3 more programs
Active Trials
NCT02705677Completed752Est. Jul 2021
NCT03196323Completed146Est. Sep 2020
NCT00004656Completed
+4 more trials
Biomed
BiomedAustralia - Sydney
2 programs
1
1
BionetidePhase 3Peptide1 trial
Drug: BionetidePhase 2/3Peptide1 trial
Active Trials
NCT06849973Completed187Est. Jan 2025
NCT06840496Recruiting210Est. Dec 2027
Neurogene
NeurogeneNY - New York
1 program
1
NGN-401Phase 31 trial
Active Trials
NCT05898620Recruiting33Est. Dec 2029
Neuren Pharmaceuticals
Neuren PharmaceuticalsAustralia - Camberwell
2 programs
2
NNZ-2566Phase 21 trial
NNZ-2566Phase 21 trial
Active Trials
NCT01703533Completed67Est. Sep 2014
NCT02715115Completed82Est. Jan 2017
Biocorp
BiocorpFrance - Issoire
1 program
1
VYNT-0126Phase 21 trial
Active Trials
NCT05625568Unknown48Est. Jun 2024
Innovation Pharmaceuticals
1 program
1
NTI164Phase 1/21 trial
Active Trials
NCT06621043Active Not Recruiting14Est. Dec 2025
Neurotech Pharmaceuticals
1 program
1
NTI164Phase 1/2
Unravel Biosciences
1 program
1
VorinostatPhase 1Small Molecule1 trial
Active Trials
NCT07150013Recruiting15Est. Mar 2027
Colorado Therapeutics
Colorado TherapeuticsCO - Louisville
3 programs
Genetic and Physical Characteristics of Rett SyndromeN/A1 trial
Male RettN/A1 trial
Rett Syndrome RegistryN/A1 trial
Active Trials
NCT00299312Completed10Est. Oct 2015
NCT06346106Unknown80Est. Apr 2024
NCT05432349Recruiting3,000Est. Jul 2028
Taysha Gene Therapies
2 programs
TSHA-102PHASE_1_21 trial
TSHA-102PHASE_32 trials
Active Trials
NCT06152237Active Not Recruiting6Est. Nov 2031
NCT07480564Not Yet Recruiting3Est. Jun 2031
NCT05606614Recruiting15Est. Jun 2031
Ultragenyx Pharmaceutical
2 programs
Tridecanoic AcidPHASE_21 trial
triheptanoinPHASE_21 trial
Active Trials
NCT03059160Unknown10Est. Aug 2018
NCT02696044Unknown12Est. Feb 2022
Jazz Pharmaceuticals
Jazz PharmaceuticalsCA - Palo Alto
2 programs
GWP42003-PPHASE_31 trial
GWP42003-PPHASE_31 trial
Active Trials
NCT03848832Terminated29Est. Jan 2021
NCT04252586Terminated21Est. Jun 2021
Cognition Therapeutics
Cognition TherapeuticsPA - Pittsburgh
1 program
computer gamingN/A1 trial
Active Trials
NCT07418905Active Not Recruiting14Est. Jul 2026
Newron Pharmaceuticals
1 program
Sarizotan low dosePHASE_2_31 trial
Active Trials
NCT02790034Terminated129Est. May 2020

Trial Timeline

Clinical trial activity over time

2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
BiomedBionetide
Taysha Gene TherapiesTSHA-102
NeurogeneNGN-401
Taysha Gene TherapiesTSHA-102
Acadia Pharmaceuticalstrofinetide
Jazz PharmaceuticalsGWP42003-P
Acadia Pharmaceuticalstrofinetide
Acadia Pharmaceuticalstrofinetide
Jazz PharmaceuticalsGWP42003-P
Human BioSciencesdextromethorphan
BiomedDrug: Bionetide
Acadia Pharmaceuticalstrofinetide
Newron PharmaceuticalsSarizotan low dose
BiocorpVYNT-0126
Ultragenyx PharmaceuticalTridecanoic Acid

Showing 15 of 31 trials with date data

Clinical Trials (31)

Total enrollment: 6,665 patients across 31 trials

To Investigate the Efficacy of Treatment With Oral NA-921 (Bionetide) Versus Placebo in Females With Rett Syndrome

Start: Sep 2026Est. completion: Dec 2027210 patients
Phase 3Recruiting

Safety and Preliminary Efficacy of TSHA-102 Gene Therapy in Pediatric Females Aged >2 to <4 Years With Rett Syndrome

Start: Mar 2026Est. completion: Jun 20313 patients
Phase 3Not Yet Recruiting

A Novel, Regulated Gene Therapy (NGN-401) Study for Females With Rett Syndrome

Start: Jun 2023Est. completion: Dec 202933 patients
Phase 3Recruiting

A Phase 1/2/3 Study of TSHA-102 Gene Therapy in Females With Rett Syndrome (REVEAL Pivotal Study)

Start: Mar 2023Est. completion: Jun 203115 patients
Phase 3Recruiting

Open-Label Extension Study of Trofinetide for Rett Syndrome

Start: Nov 2020Est. completion: Jun 202377 patients
Phase 3Terminated

A Long-term Safety Study of Cannabidiol Oral Solution (GWP42003-P, CBD-OS) in Patients With Rett Syndrome

Start: Feb 2020Est. completion: Jun 202121 patients
Phase 3Terminated

Open-Label Extension Study of Trofinetide for the Treatment of Girls and Women With Rett Syndrome

Start: Jan 2020Est. completion: Aug 2022154 patients
Phase 3Completed

Study of Trofinetide for the Treatment of Girls and Women With Rett Syndrome (LAVENDER™)

Start: Nov 2019Est. completion: Oct 2021187 patients
Phase 3Completed

Efficacy and Safety of Cannabidiol Oral Solution (GWP42003-P, CBD-OS) in Patients With Rett Syndrome

Start: Jul 2019Est. completion: Jan 202129 patients
Phase 3Terminated

Independent Studies of Dextromethorphan and of Donepezil Hydrochloride for Rett Syndrome

Start: Sep 2004Est. completion: Jun 200890 patients
Phase 3Unknown
NCT06849973BiomedDrug: Bionetide

To Study the Efficacy & Safety of Oral NA-921 (Bionetide) in Girls and Women with Rett Syndrome

Start: Mar 2024Est. completion: Jan 2025187 patients
Phase 2/3Completed

An Open-Label Study of Trofinetide for the Treatment of Girls Two to Five Years of Age Who Have Rett Syndrome

Start: Sep 2021Est. completion: May 202315 patients
Phase 2/3Terminated

Evaluation of the Efficacy, Safety, and Tolerability of Sarizotan in Rett Syndrome With Respiratory Symptoms

Start: Oct 2016Est. completion: May 2020129 patients
Phase 2/3Terminated

Study of VYNT-0126 in the Treatment of Rett Syndrome in Adult Patients

Start: Mar 2023Est. completion: Jun 202448 patients
Phase 2Unknown

Open Label Trial of Triheptanoin (UX007) in Treatment of Rett Syndrome.

Start: Apr 2017Est. completion: Aug 201810 patients
Phase 2Unknown

Treatment of Mitochondrial Dysfunction in Rett Syndrome With Triheptanoin

Start: Jun 2016Est. completion: Feb 202212 patients
Phase 2Unknown

A Safety Study of NNZ-2566 in Pediatric Rett Syndrome

Start: Mar 2016Est. completion: Jan 201782 patients
Phase 2Completed

A Safety Study of NNZ-2566 in Patients With Rett Syndrome

Start: Mar 2013Est. completion: Sep 201467 patients
Phase 2Completed

Safety and Efficacy of TSHA-102 in Pediatric Females With Rett Syndrome (REVEAL Pediatric Study)

Start: Dec 2023Est. completion: Nov 20316 patients
Phase 1/2Active Not Recruiting

Assessing the Safety and Efficacy of Full-Spectrum Medicinal Cannabis Plant Extract 0.08% THC (NTI164) in the Treatment of Rett Syndrome (RTT)

Start: Sep 2023Est. completion: Dec 202514 patients
Phase 1/2Active Not Recruiting

Rett REVOLUTION Trial: An Exploratory Evaluation of the Safety and Efficacy of Vorinostat in Rett Syndrome

Start: Mar 2026Est. completion: Mar 202715 patients
Phase 1Recruiting

Technology-supported Motor Rehabilitation for People With Rett Syndrome

Start: Oct 2024Est. completion: Jul 202614 patients
N/AActive Not Recruiting

The Diagnostic Experience of Male Rett Syndrome

Start: May 2023Est. completion: Apr 202480 patients
N/AUnknown
NCT05432349Colorado TherapeuticsRett Syndrome Registry

Rett Syndrome Registry

Start: Aug 2022Est. completion: Jul 20283,000 patients
N/ARecruiting
NCT02705677Human BioSciencesBiobanking of Rett Syndrome and Related Disorders

Biobanking of Rett Syndrome and Related Disorders

Start: Sep 2017Est. completion: Jul 2021752 patients
N/ACompleted
NCT03196323Human BioSciencesDevelopment of a Behavioral Outcome Measure for Rett Syndrome (RettBe)

Development of a Behavioral Outcome Measure for Rett Syndrome (RettBe)

Start: Jun 2017Est. completion: Sep 2020146 patients
N/ACompleted
NCT02738281Human BioSciencesNatural History of Rett Syndrome & Related Disorders

Natural History of Rett Syndrome & Related Disorders

Start: Nov 2015Est. completion: Jul 20211,044 patients
N/ACompleted
NCT00299312Colorado TherapeuticsGenetic and Physical Characteristics of Rett Syndrome

Genetic and Physical Characteristics of Rett Syndrome

Start: Mar 2006Est. completion: Oct 201510 patients
N/ACompleted
NCT00004773Human BioSciencesStudy of Cardiac and Paroxysmal Abnormalities in Rett Syndrome

Study of Cardiac and Paroxysmal Abnormalities in Rett Syndrome

Start: Aug 1995Est. completion: Jun 199795 patients
N/ACompleted

Study of the Pathogenesis of Rett Syndrome

Start: Jan 1995120 patients
N/ACompleted
NCT00004656Human BioSciencesMetabolic assessment with body composition evaluation

Nutritional Aspects of Rett Syndrome

Start: May 1993
N/ACompleted

Related Jobs in Rare Diseases

Phase Legend

PreclinicalLab & animal studies
Phase 1Safety & dosing
Phase 2Efficacy testing
Phase 3Large-scale trials
On MarketApproved & available

Key Insights

4 late-stage (Phase 3) programs, potential near-term approvals
5 actively recruiting trials targeting 6,665 patients
16 companies competing in this space

The information on this page is for informational purposes only and should not be used as a substitute for professional medical advice. Drug information is sourced from FDA, DailyMed, and other government databases. Adverse event data from FAERS does not establish causation. Always consult a healthcare professional for medical decisions.