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Protollin

Phase 1

Alzheimer Disease (AD) | Small molecule | Neurology |NovaBridge Biosciences|Last Updated: Sep 22, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment16

FDA Designations

No designations recorded

Clinical trial landscape

Protollin · 1 trial · 1 indication

Phase 1 1
NCT07187141Nasal Protollin in Early Symptomatic Alzheimer's DiseaseAlzheimer Disease (AD)
COMPLETED16 Analytics
PHASE1COMPLETED
Nasal Protollin in Early Symptomatic Alzheimer's Disease
Alzheimer Disease (AD)Unlock trial analytics

Study Endpoints

Primary Endpoints

Safety and tolerability of ascending doses of nasal Protollin
Day 1 (enrollment) to 180 days (end of study)

Safety and tolerability of ascending doses of nasal Protollin following administration of two doses one week apart in subjects, 60-85 years inclusive with Early Symptomatic Alzheimer's Disease (29-20 MMSE classification). Safety will be assessed by physical examination (including evaluation of the nose and oropharynx), laboratory studies, EKG, and elicited and spontaneously reported signs and symptoms, using the FDA Guidance for Industry: Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials (September 2007) for the evaluation of toxicities and reactogenicity. Tolerability will be assessed by the degree of severity of both spontaneously reported and elicited symptoms and associated signs, systemically and at the site of administration following administration of nasal Protollin, if thought by the investigator to be related or possibly related to its administration.

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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cohort AACTIVE_COMPARATORProtollin 0.1 mg or placebo
Cohort BACTIVE_COMPARATORProtollin 0.5 mg or placebo
Cohort CACTIVE_COMPARATORProtollin 1.0 mg or placebo
Cohort DACTIVE_COMPARATORProtollin 1.5 mg or placebo

Interventions

NameTypeDescription
ProtollinDRUGFor the 0.1, 0.5, and 1.0 mg dose groups, Protollin (450 μL per vial) in an aqueous buffer will be administered in two, 0.1 μL sprays, one per nostril. For the 1.5 mg dose group, Protollin (450 muL per vial) in an aqueous buffer will be administered in three, 0.1 μL sprays, two in one nostril and one in the other nostril.
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Eligibility Criteria

Age Range60 Years to 85 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. The Sponsor will rely on NIA-AA Alzheimer's Disease Diagnostic Guidelines1 for Early Symptomatic Alzheimer's Disease and have a MMSE of 29-20. 2. Age between 60-85 years (inclusive). 3. Good general health with no disease expected to interfere with the study. 4. On a stable m...

Countries:United States
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Frequently asked questions about Protollin

What is Protollin used for in Alzheimer Disease?

Protollin is an investigational small molecule being studied for the treatment of early symptomatic Alzheimer's Disease (AD). It is administered nasally and is currently in Phase 1 clinical development. Protollin is not yet approved by the FDA and remains under investigation for this indication.

Who makes Protollin?

Protollin is being developed by I-Mab, which is listed as a Sponsored ADR on the stock exchange under the ticker NBP. The company is conducting clinical research on this investigational drug for Alzheimer's Disease.

What phase is Protollin in?

Protollin is in Phase 1 clinical development for Alzheimer's Disease. A Phase 1 trial has been completed, involving 16 participants. The drug is still investigational and has not received FDA approval.

What clinical trials is Protollin in?

Protollin has one completed Phase 1 trial, identified as NCT07187141, titled 'Nasal Protollin in Early Symptomatic Alzheimer's Disease.' This trial enrolled 16 participants in the United States, all aged 60 years or older, and was randomized, double-blind, and active-controlled.

Is Protollin the same as any other drug?

No alternative names for Protollin have been reported. It is identified solely by the name Protollin in clinical trial records and development information.