NCT05791864招募中1 期
A First-in-Human, Open-Label, Dose-Escalation Study to Evaluate the Safety and Tolerability of Gene Therapy With TTX-381 for the Ocular Manifestations Associated With Neuronal Ceroid Lipofuscinosis Type 2 (CLN2) Disease
适应症
试验速览
- 阶段
- 1 期
- 状态
- 招募中
- 入组人数
- 16
- 试验地点
- 3
- 主要终点
- Ocular and overall AE and SAEs through Day 360
研究概览
简要总结
This is a first-in-human, open-label, single ascending dose study of TTX-381 for the treatment of ocular manifestations of CLN2 (Batten disease).
详细描述
This is a first-in-human, open-label, single ascending dose study of TTX-381, a gene therapy for the potential treatment of ocular manifestations of CLN2 (Batten disease). TTX-381 is being studied as a potential treatment of ocular manifestations of neuronal ceroid lipofuscinosis type 2 (CLN2) disease. Children with CLN2 disease have a non-working gene (set of instructions) that causes an enzyme called tripeptidyl-peptidase 1 (TPP1) to be missing or not working in their bodies. Without enough TPP1, cells cannot break down certain molecules in the body, so these storage materials build up and start to hurt the body, particularly the central nervous system (the brain and spine) and retinal cells (eyes); cause seizures; and change how children with CLN2 disease grow, act, think, and see. After eligibility has been confirmed, the participant's eyes will be assigned as the treated eye and the control fellow eye. Due to the symmetry in the clinical course of CLN2 ocular disease, untreated fellow eyes will serve as controls for the contralateral, treated eyes. Participants will be followed in this study for 5 years after TTX-381 administration.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Sequential
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
盲法说明
In order to minimize the effect of potential bias, wherever possible, endpoints will be measured or interpreted by masked evaluators.
入排标准
- 年龄范围
- 12 Months 至 84 Months（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •A participant is eligible to be included in the study only if all of the following criteria apply:
- •Has biallelic CLN2 mutations.
- •Has decreased leukocyte TPP1 activity.
- •Has clinical signs or symptoms consistent with CLN2 disease (eg, developmental delay, developmental decline, seizure, vision loss, or other signs/symptoms) OR an older sibling with confirmed CLN2 diagnosis.
- •Is currently receiving biweekly ICV ERT treatment with cerliponase alfa.
- •Meets the following baseline disease condition according to age and CRT as assessed by SD-OCT and confirmed by CRC:
- •Participants in the phase of accelerated decline in CRT:
- •CRT at baseline ≤210 μm and
- •CRT at baseline ≥140 μm in both eyes and
- •Age ≤84 months,
- •Is willing to adhere to the protocol and 5-year visit schedule.
- •Sexually active female participants of childbearing potential (following menarche) or fertile male participants (following puberty) must be willing to use a medically accepted form of contraception from Screening Visit 2 until 6 weeks after vector administration.
- •Was previously administered TTX-
- •Upon retrospective review, met the above criteria at the time of administration of TTX-
- •IDMC may consider exceptions to this when weighing whether to retrospectively enroll a participant who has received TTX-
- •Has been recommended for enrollment into the clinical trial by IDMC
排除标准
- •Participants are excluded from the study if any of the following criteria apply:
- •Any ocular or systemic condition that, in the opinion of the investigator, would prevent administration and evaluation of the investigational product or interpretation of participant safety or study results (eg, significant lens or corneal opacities, glaucoma, amblyopia, gross retinal anatomical abnormality, etc).
- •Difference in screening CRT measurement between the right and left eye >10μm.
- •Prior Grade 3 or 4 hypersensitivity reaction, eg, bronchospasm and hypotension requiring intravenous treatment, cardiac dysfunction, anaphylaxis to ICV cerliponase alfa infusion.
- •Any other contraindication to the administration of ICV cerliponase alfa, including ventriculo-peritoneal shunt, acute intracerebroventricular access device leakage, device failure, or device-related infection that would impact ability to receive ICV cerliponase alfa.
- •Prior participation in a gene therapy study. A subject who has received subretinal TTX-381 under a compassionate use protocol may be enrolled if the PI, Medical Monitor, and Sponsor all agree that he/she can safely and successfully participate in the study and the IDMC has approved their enrollment.
- •Prior participation in another ocular clinical trial, except an intravitreal cerliponase alfa trial where a subject has received a maximum of 3 injections and the PI, Medical Monitor, and Sponsor all agree that he/she can safely and successfully participate in the study after a washout period of 3 or more months.
- •Prior intraocular injections of any kind, with the following two exceptions. A subject who has received a maximum of 3 intravitreal injections of cerliponase alfa may be enrolled in the study if the PI, Medical Monitor, and Sponsor all agree that he/she can safely and successfully participate in the study after a washout period of 3 or more months. A subject who has received subretinal TTX-381 under a compassionate use protocol may be enrolled if the PI, Medical Monitor, and Sponsor all agree that he/she can safely and successfully participate in the study and the IDMC has approved their enrollment.
- •Participation in a nonocular clinical study with an investigational drug in the past 6 months prior to screening, except for intracerebroventricular cerliponase alfa.
- •Ocular surgery within the prior 6 months except as above for subretinal TTX-381 administration.
- •Prior bone marrow transplant. Use of the following medications within the 30 days prior to treatment: gemfibrozil, mycophenolate, prednisone or other steroids for the intended purpose of treating NCL (not including asthma indications), flupirtine.
- •Known sensitivity or contraindications to medications planned for use in the peri-operative period.
- •Contraindications to systemic immunosuppression.
- •Severe renal insufficiency as determined by an estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73 m2, based on creatinine, at Screening. If the laboratory determines that the creatinine level is less than the lower limit of assay validation or detection, then the lowest limit cutoff value will be used to estimate eGFR.
- •Severe hepatic insufficiency as determined by alanine aminotransferase (ALT) or aspartate aminotransferase (AST) > 3 × upper limit of normal (ULN) or total bilirubin > 1.5 × ULN at Screening Visit 1, unless the subject has a previously known history of Gilbert's syndrome and a fractionated bilirubin that shows conjugated bilirubin < 35% of total bilirubin.
- •Mutations in another CLN gene.
- •Mutation in another gene associated with inherited retinal disease.
- •Contraindications to intraocular surgery (eg, severe coagulopathy).
- •Positive urine pregnancy test at Screening (applying only to females of childbearing potential).
- •Any other condition that would not allow the potential participant to complete follow-up examinations during the study or, in the opinion of the investigator, makes the potential participant unsuitable for the study.
- •The participant had a positive polymerase chain reaction (PCR) viral test for severe acute respiratory syndrome coronavirus 2 (SARS-CoV2 PCR) within the last 4 weeks before signing the informed consent form (ICF) or has persistent coronavirus disease (COVID-19) symptoms regardless of when the last SARS-CoV2 PCR viral test was performed or when the infection occurred.
结局指标
主要结局
Ocular and overall AE and SAEs through Day 360
时间窗: 360 days
To evaluate the safety and tolerability of TTX-381 through Day 360 in participants with Neuronal Ceroid Lipofuscinosis Type 2 (CLN2) disease
次要结局
- To evaluate the effect of TTX-381 on area of EZ loss(Day 180, Day 360)
- To evaluate shedding of TTX-381 in urine and tears(Day 360)
- To evaluate the effect of TTX-381 on central subfield photoreceptor layer thickness(Day 180, Day 360)
- To measure TTX-381 transgene product (tripeptidyl peptidase 1 [TPP1]) in aqueous humor(Day 90, Day 360)
研究者
研究点 (3)
Loading locations...
相似试验
招募中
1 期
Phase 1 Study of UCMYM802 Injection in Mesothelin-positive Advanced Malignant Solid TumorsMalignant MesotheliomaBile Duct CancerRectal CancerOvary CancerColorectal CancerBreast Cancer FemalePancreatic CancerNCT06256055UTC Therapeutics Inc.24
招募中
1 期
A First-in-human, Clinical Trial Assessing the Safety of ES2B-C001-S01 With or Without [Adjuvant] in Patients With HER2-expressing Metastatic Breast Cancer.Breast CancerNCT06746688ExpreS2ion Biotechnologies40
尚未招募
1 期
A First-in-human Study of 3HP-2827 in Patients With Unresectable or Metastatic Solid Tumors With FGFR2 AlterationsSolid Tumors With FGFR2 Alterations, AdultNCT062879183H (Suzhou) Pharmaceuticals Co., Ltd.130
已完成
1 期
Study of AMV564 in Patients With AMLAcute Myeloid LeukemiaNCT03144245Amphivena Therapeutics, Inc.53
Unknown
1 期
Dose-Escalation and Dose-Expansion Study of ZX-4081 in Patients With Advanced Solid TumorsAdvanced Solid TumorNCT05118841Nanjing Zenshine Pharmaceuticals60