Stargardt disease 1 (STGD1) is the most prevalent form of juvenile macular degeneration. It is caused by a rare, inherited autosomal recessive trait, leading to severe and irreversible blindness by the first or second decade of life. Earlier onset of the disease is related to a rapid vision loss, while patients with a later onset tend to have a better prognosis. This study will enrol subjects aged 12-18 years old with a confirmed clinical diagnosis of Stargardt disease type 1 (STGD1). This study will include 2 phases, the phase 1b portion is to determine the optimal dose for phase 2 based on the extent of retinol binding protein 4 (RBP4) reduction after 2 cycles of tinlarebant treatment. The phase 2 portion will evaluate the safety and efficacy of a single daily dose of tinlarebant over a 24-month treatment period.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
13
Phase 1b Portion: tinlarebant will be self-administered orally once daily for 2 cycles, 14 days per cycle. Phase 2 portion: tinlarebant will be self-administered orally once daily for 24 months.
Sydney Children's Hospitals Network
Westmead, New South Wales, Australia
Lions Eye Institute
Perth, Western Australia, Australia
National Taiwan University Hospital
Taipei, Taiwan
To evaluate systemic and ocular safety and tolerability of tinlarebant.
To evaluate safety and tolerability of daily dosing of tinlarebant assessed by incidence and/or severity of ocular and non-ocular adverse events.
Time frame: From baseline to 24 months
The optimal dose for Phase 2.
To determine optimal dose of tinlarebant administered orally in adolescent patients with Stargardt Disease.
Time frame: Up to 24 months
Change in atrophic lesion size.
Time frame: From baseline to 24 months.
Maximum Plasma Concentration (Cmax) of tinlarebant in plasma.
Time frame: Up to 24 months
Time to Maximum Plasma Concentration (Tmax) of tinlarebant in plasma.
Time frame: Up to 24 months
Half-life (t1/2) of tinlarebant in plasma.
Time frame: Up to 24 months
Time to minimal plasma RBP4 level (Tmin)
Time frame: Up to 24 months
Minimum concentration of RBP4 (Cmin)
Time frame: Up to 24 months
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