Multi-center, Open-label, Single-ascending Dose Study of Safety and Tolerability of TN-201 in Adults With Symptomatic MYBPC3 Mutation-associated HCM

Trial statusRecruiting
Trial phasePhase 1, Phase 2
Trial typeInterventional
Biological sexAll
Age18-75
SponsorTenaya Therapeutics

About this trial

This is a first-in-human, non-randomized, open-label study designed to evaluate the safety, tolerability, and pharmacodynamics (PD) of TN-201 in adult patients with symptomatic hypertrophic cardiomyopathy (HCM) caused by mutations in the MYBPC3 gene.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

MYBPC3 mutation

Hypertrophic Cardiomyopathy (obstructive and nonobstructive)

Left Ventricular Ejection Fraction ≥45%

NYHA Functional Class II or III symptoms

Disqualifiers

High AAV9 neutralizing antibody titer

Trial design

Design model

Sequential

Treatments tested in this trial

  • TN-201

    Genetic

    TN-201 is a recombinant adeno-associated virus serotype 9 (AAV9) containing Myosin Binding Protein C (MYBPC3) transgene. It is a single (one-time) intravenous dose.

Treatment groups

30 Participants
are divided into 2 treatment groups
Group A: Cohort 1Experimental treatment 1 intervention
Group B: Cohort 2Experimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Number and severity of Adverse Events over the course of the study.

Time frame
5 Years
2

Number of Serious Adverse Events related to study drug.

Time frame
5 Years

Secondary outcomes

1

Change from baseline to Week 52 in Kansas City Cardiomyopathy Questionnaire Clinical Summary Score (KCCQ-CSS).

The score ranges from 0-100, with zero being a worse outcome

Time frame
52 Weeks

Other outcomes

1

Expression levels of vector genomes and transgene messenger ribonucleic acid (mRNA) and MyBP-C protein in right ventricular (RV) septal biopsy samples at Pre-Treatment, Week 26, and Week 52.

Time frame
52 Weeks
2

Change from Pre-Treatment period in N-terminal pro B-type natriuretic peptide (NTproBNP), and high-sensitivity cardiac troponin I (hs-cTnI) levels.

Time frame
5 Years
3

Percentage of patients who had a change in New York Heart Association (NYHA) Functional Class from baseline.

Time frame
5 Years
4

Change from baseline in echocardiography measurements of indexed left atrial and left ventricular (LV) volumes.

Time frame
5 Years

Sponsors and contacts

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