ClinicalTrials.gg
CompletedNCT05758922RAINBOWUpdated May 14, 2026

Phase 2 Study Evaluating the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of Oral AZ-3102 in Patients With GM2 Gangliosidosis or Niemann-Pick Type C Disease

A Phase 2 interventional study of AZ-3102 (Dose 1) and Placebo in GM2 Gangliosidosis and Niemann-Pick Disease, Type C, sponsored by Azafaros B.V.. Completed at 3 sites in Brazil. Open to participants aged 12 Years and older. Per ClinicalTrials.gov, last updated 2026-05-14.

Sponsored by Azafaros B.V. · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Apr 2024, 2 years 6 months ago, and no results have been posted to the registry.

Help build ClinicalTrials.gg — short surveys, remote interviews or testing, in your language. Take part →

Phase
Phase 2
Study type
Interventional
Enrollment
13
Allocation
Randomized
Ages
12 Years and older
Sex
All
01

Study summary

This phase 2 is a randomized, double-blind, placebo controlled, 12 weeks study with daily oral administration of AZ-3102 aiming to evaluate the safety and pharmacokinetic (PK) profile in GM2 Gangliosidosis and Niemann-Pick type C disease (NP-C) patients. After approval by the country health authorities, a double-blind extension period was proposed to the patients who complete the 12-week study.

02

Conditions studied

  • GM2 Gangliosidosis
  • Niemann-Pick Disease, Type C
03

In context

Gangliosidoses, GM2

26 studies on the registry are indexed under Gangliosidoses, GM2; 6 are open to participants now.

This study's enrollment of 13 is below the median of 21 across 14 interventional studies indexed under Gangliosidoses, GM2.

Browse Gangliosidoses, GM2 studies →

Lead sponsor

Azafaros B.V. is the lead sponsor of 8 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Male and female patients aged above 12 years old at signature.
  • GM2 patients : Genetically and biochemically confirmed diagnosis of Tay-Sachs or Sandhoff disease.
  • NP-C patients : Genetically confirmed diagnosis of NP-C.
  • NP-C patients : Miglustat-naïve patients unwilling or unable to take miglustat, OR, patients who have discontinued miglustat because of confirmed safety/tolerability issues. Miglustat must have been discontinued at least 1 month prior to Baseline visit.
  • Total SARA score ≥ 1 at Baseline.
  • A male participant with a female partner of is eligible if he agrees to follow the guidance.
  • If a female participant is a WOCBP and is having a male partner, she must agree to follow the contraceptive guidance.
  • Willing and able to complete protocol assessments.
  • Parent and/or legal guardian is able to read, understand, and sign the informed consent. Where appropriate, assent will also be sought for patients who have not reached the age of majority or who are not able to sign the consent form.

Exclusion criteria

Exclusion Criteria:

  • Any abnormal conditions at baseline visit which, in the opinion of the PI; could interfere with study assessments (e.g., severe infection).
  • History of medical conditions other than GM2 gangliosidosis/NP-C that, in the opinion of the PI; would confound scientific rigor or interpretation of results.
  • Presence of another inherited neurologic disease.
  • The dose of anti-epileptic treatment(s) was not stable and/or a new anti-epileptic treatment (drug or procedure) was prescribed during the last month before baseline.
  • Total >2 x (isolated bilirubin >2 x ULN is acceptable if bilirubin is fractionated and direct bilirubin is \<35%).
  • count \< 100 x 10\^9/L.
  • Presence of moderate or severe renal impairment.
  • Prior participation in a clinical study with an drug within 3 months prior to Baseline.
  • Patient with a positive serum pregnancy test (tested only for women of ) at baseline.
  • Breast feeding ongoing at baseline or planned during the study.
  • with an average of triplicate interval > 440 msec.
  • Received treatment with N-Acetyl-Leucine, gene therapy, stem cell transplantation, or with any other azasugars (iminosugars) compound with similar mechanism of action within 3 months before baseline (except for miglustat for which it is 1 month).
  • Any known allergy to azasugars or any .
  • Evidence of suicidal ideation with intent (Type 4-5) on the Columbia Suicide Severity Rating Scale (C-SSRS) at Screening. Only in patients judged by the PI cognitively capable to understand the concept of suicide.
Terms in these criteria, in plain language(10)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
13 participants (actual)

Study arms

  • Placebo comparator
    Placebo

    Participant will receive placebo once daily during the course of the study (12 weeks).

    Drug: Placebo

  • Experimental
    AZ-3102 (Dose 1)

    Participant will receive AZ-3102 (Dose 1) once daily during the course of the study (12 weeks) and the study extension (if applicable).

    Drug: AZ-3102 (Dose 1)

  • Experimental
    AZ-3102 (Dose 2)

    Participant will receive AZ-3102 (Dose 2) once daily during the course of the study (12 weeks) and the study extension (if applicable).

    Drug: AZ-3102 (Dose 2)

Interventions

  • Pharmaceutical form: capsule Route of administration: oral

  • DrugPlacebo

    Pharmaceutical form: capsule Route of administration: oral

  • Pharmaceutical form: capsule Route of administration: oral

06

What researchers measure

Primary outcomes

  1. Safety/tolerability: Incidence and severity of treatment emergent adverse events

    Time frame: Through study completion, up to Week 12

  2. Assessment of pharmacokinetic (PK) parameters in plasma: Cmax

    Time frame: Through study completion, up to Week 12

  3. Assessment of PK parameters in plasma: Tmax

    Time frame: Through study completion, up to Week 12

  4. Assessment of PK parameters in plasma: AUC0-24h

    Time frame: Concentration versus time curve calculated from time 0 to 24 hours (AUC0-24h)

07

Study locations

3 sites
  • Hospital Pequeno Principe
    Curitiba, Brazil
  • Hospital de Clinicas de Porto Alegre
    Porto Alegre, Brazil
  • Instituto Nacional de Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira
    Rio de Janeiro, Brazil
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Apr 2023 to primary completion in Apr 2024, 11 months.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 15, 2023
First posted
Mar 8, 2023
StartActual
Apr 24, 2023
Primary completionActual
Apr 19, 2024
CompletionActual
May 5, 2026
Last update
May 14, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 14, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05758922
Lead sponsor
Azafaros B.V.
Responsible party
Sponsor
First posted
Mar 8, 2023
Start date
Apr 24, 2023
Primary completion
Apr 19, 2024
Completion
May 5, 2026
Last update
May 14, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Nizubaglustat

Start the discussion