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CPK850

Phase 1

Retinitis Pigmentosa | Monoclonal antibody | Ophthalmology |Novartis AG|Last Updated: Jun 11, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment12

FDA Designations

No designations recorded

Clinical trial landscape

CPK850 · 1 trial · 1 indication

Phase 1 1
NCT03374657A First-in-human, Proof of Concept Study of CPK850 in Patients With RLBP1 Retinitis PigmentosaRetinitis Pigmentosa
COMPLETED12 Analytics
PHASE1COMPLETED
A First-in-human, Proof of Concept Study of CPK850 in Patients With RLBP1 Retinitis Pigmentosa
Retinitis PigmentosaUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with adverse events (AEs), serious adverse events (SAEs) and deaths
Up to Year 5

Safety events

Number of responders in dark adaptation
Screening/baseline up to Year 1

A patient is considered a responder if sensitivity recovery values at 1 hour post-bleach are observed to be outside of the patient's prediction interval at ≥2 consecutive post-treatment visits within one year after treatment.

Secondary Endpoints

Number of responders with recovery of the cone system
Screening/baseline up to Year 1
Change from screening/baseline in Visual field perimetry mean deviation
Screening/baseline up to Year 2
Change from screening/baseline in Total contrast sensitivity score
Screening/baseline up to Year 2
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingSINGLE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
CPK Dose 1 (lowest dose)EXPERIMENTALCPK850, one subretinal injection to the study eye
CPK Dose 2 (next lowest dose)EXPERIMENTALCPK850, one subretinal injection to the study eye
CPK Dose 3 (third lowest dose)EXPERIMENTALCPK850, one subretinal injection to the study eye
CPK Dose 4 (highest dose)EXPERIMENTALCPK850, one subretinal injection to the study eye

Interventions

NameTypeDescription
CPK850BIOLOGICALIn one of 4 dose levels administered via subretinal injection under anesthesia
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Eligibility Criteria

Age Range18 Years to 70 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Male and female patients aged 18 to 70 years inclusive. * The visual acuity in the study eye at the screening 1 visit should be no better than 60 ETDRS letters. * Clinical diagnosis of Bothnia dystrophy, Newfoundland rod-cone dystrophy or other progressive retinitis pigmentosa...

Countries:Sweden
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Recent Changes (Last 90 Days)

MEDIUMJul 12, 2026NCT03374657TRIAL_REMOVED: changed
MEDIUMJul 12, 2026NCT03374657TRIAL_REMOVED: changed
MEDIUMJul 12, 2026NCT03374657TRIAL_REMOVED: changed
MEDIUMJul 12, 2026NCT03374657TRIAL_REMOVED: changed
HIGHJun 11, 2026NCT03374657Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHJun 11, 2026NCT03374657Status: ACTIVE_NOT_RECRUITING → COMPLETED

Frequently asked questions about CPK850

What is CPK850 used for?

CPK850 is an investigational monoclonal antibody being developed for retinitis pigmentosa, a group of inherited eye disorders that cause progressive vision loss. It is being studied in patients with RLBP1 retinitis pigmentosa, a specific genetic form of the condition. The drug is currently in Phase 1 clinical development and has not been approved by regulatory authorities.

Who makes CPK850?

CPK850 is being developed by Novartis AG, a multinational pharmaceutical company headquartered in Switzerland. Novartis trades on the New York Stock Exchange under the ticker symbol NVS. The company is conducting clinical research on this investigational therapy for retinitis pigmentosa.

What phase is CPK850 in?

CPK850 is in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by the FDA or other regulatory agencies. The Phase 1 trial has been completed, and the drug remains in early-stage clinical testing for retinitis pigmentosa.

What clinical trials is CPK850 in?

CPK850 has one completed clinical trial registered under NCT03374657, titled "A First-in-human, Proof of Concept Study of CPK850 in Patients With RLBP1 Retinitis Pigmentosa." This Phase 1 study enrolled 12 participants in Sweden and included adults aged 18 years and older of all sexes.

How does CPK850 work?

CPK850 is a monoclonal antibody, a type of protein designed to bind to a specific target in the body. The exact molecular target of CPK850 has not been disclosed in available information. The drug is being investigated for its potential role in treating retinitis pigmentosa, though its precise mechanism of action remains under study.

Is CPK850 the same as any other drug?

No alternative names for CPK850 have been reported. The drug is identified solely by its code name CPK850 in clinical trial registrations and available information. It is a distinct investigational monoclonal antibody being developed by Novartis for retinitis pigmentosa.