A Phase 1, Dose-escalation, Randomized, Placebo-Controlled Study to Assess the Safety, Tolerability, and Pharmacodynamics of SYNB1353 in Healthy Volunteers
概览
- 阶段
- 1 期
- 干预措施
- SYNB1353
- 疾病 / 适应症
- Homocystinuria
- 发起方
- Synlogic
- 入组人数
- 31
- 试验地点
- 1
- 主要终点
- Number of participants with abnormal laboratory values and/or adverse events
- 状态
- 已完成
- 最后更新
- 3年前
概览
简要总结
This is a Phase 1, double-blind (Sponsor-open), placebo-controlled, randomized, dose-escalation, inpatient study using a multiple-ascending dose (MAD) design to assess the safety, tolerability, and PD of SYNB1353 in HVs.
详细描述
This study is evaluating the safety, tolerability and PD of SYNB1353 in up to 8 cohorts of HVs. In each cohort, HVs will be randomly assigned to investigational medicinal product (IMP), according to a MAD design, to receive either SYNB1353 or placebo (6 active:2 placebo per cohort). A methionine loading study will be performed on Day -1 and Day 7. At each IMP dose level, a dose of methionine will be evaluated. The methionine dose may increase if necessary to evaluate the PD of SYNB1353.
研究者
入排标准
入选标准
- •Age ≥ 18 to ≤ 64 years.
- •Able and willing to voluntarily complete the informed consent process.
- •Available for and agree to all study procedures, including feces, urine, and blood collection and adherence to diet control, inpatient monitoring, follow-up visits, and compliance with all study procedures.
- •Male subjects who are sexually abstinent or surgically sterilized (vasectomy), or those who are sexually active with a female partner(s) and agree to use an acceptable method of contraception (such as a condom with spermicide) combined with an acceptable method of contraception for their non-pregnant female partner(s) (as defined in Inclusion Criterion # 5) after informed consent, throughout the study, and for a minimum of 3 months after the last dose of IMP, and who do not intend to donate sperm in the period from Screening until 3 months following administration of the IMP.
- •Female subjects who meet 1 of the following:
- •Women of childbearing potential (WOCBP) must have a negative serum pregnancy test (human chorionic gonadotropin) at Screening and a negative urine pregnancy test at baseline prior to the start of IMP and must agree to use acceptable method(s) of contraception, combined with an acceptable method of contraception for their male partner(s) (as defined in Inclusion Criterion # 4) after informed consent, throughout the study and for a minimum of 3 months after the last dose of IMP. Acceptable methods of contraception include hormonal contraception, hormonal or non-hormonal intrauterine device, bilateral tubal occlusion, complete abstinence, and/or vasectomized partner with documented azoospermia 3 months after procedure.
- •WOCBP must not be breastfeeding.
- •Premenopausal women with at least 1 of the following:
- •i. Documented hysterectomy ii. Documented bilateral salpingectomy iii. Documented bilateral oophorectomy iv. Documented tubal ligation/occlusion v. Sexual abstinence is preferred or usual lifestyle of the subject d. Postmenopausal women (12 months or more amenorrhea verified by follicle- stimulating hormone \[FSH\] assessment and over 45 years of age in the absence of other biological or physiological causes).
排除标准
- •Acute or chronic medical, surgical, psychiatric, or social condition or laboratory abnormality that may increase subject risk associated with study participation, compromise adherence to study procedures and requirements, or may confound interpretation of study safety or PD results and, in the judgment of the Investigator, would make the subject inappropriate for enrollment.
- •Body mass index \< 18.5 or ≥ 35 kg/m
- •History of or current immunodeficiency disorder including human immunodeficiency virus (HIV) antibody positivity.
- •Hepatitis B surface antigen positivity (subjects with hepatitis B surface antibody positivity and hepatitis B core antibody positivity are not excluded, provided that the hepatitis B surface antigen is negative).
- •Hepatitis C antibody positivity, unless a hepatitis C virus ribonucleic acid test is performed, and the result is negative.
- •History of febrile illness, confirmed bacteremia, or other active infection deemed clinically significant by the Investigator within 30 days prior to the anticipated first dose of IMP.
- •History of (within the past month) passage of 3 or more loose stools per day, where "loose stool" is defined as a Type 6 or Type 7 on the Bristol Stool Chart (see Appendix 1).
- •Inflammatory or irritable bowel disorder of any grade experienced within the previous 60 days.
- •Active or past history of GI bleeding within 60 days prior to the Screening Visit as confirmed by hospitalization-related event(s) or medical history of hematemesis or hematochezia.
- •Underlying cardiovascular disease or uncontrolled gastroesophageal reflux disease
研究组 & 干预措施
Cohort 1
HV subjects receive doses 3 × 10\^11 live cells of SYNB1353 and 30 mg/kg of methionine. Subjects will receive a single dose of SYNB1353 on the first day of dosing (Day 1), on Days 2 and 3 subjects will receive up to 2 doses of IMP (BID), and on Days 4 to 7 subjects will receive up to 3 doses of IMP (TID). A methionine loading study will be performed on Day -1 and Day 7 after an overnight fast. A dose of methionine of 30 mg/kg will be evaluated.
干预措施: SYNB1353
Cohort 2
HV subjects receive doses 3 × 10\^11 live cells of SYNB1353 and up to 100 mg/kg of methionine. Subjects will receive a single dose of SYNB1353 on the first day of dosing (Day 1), on Days 2 and 3 subjects will receive up to 2 doses of IMP (BID), and on Days 4 to 7 subjects will receive up to 3 doses of IMP (TID). A methionine loading study will be performed on Day -1 and Day 7 after an overnight fast. A dose of methionine of up to 100 mg/kg will be evaluated.
干预措施: SYNB1353
Cohort 3
HV subjects receive doses 6 × 10\^11 live cells of SYNB1353 and 30 mg/kg of methionine. Subjects will receive a single dose of SYNB1353 on the first day of dosing (Day 1), on Days 2 and 3 subjects will receive up to 2 doses of IMP (BID), and on Days 4 to 7 subjects will receive up to 3 doses of IMP (TID). A methionine loading study will be performed on Day -1 and Day 7 after an overnight fast. A dose of methionine of 30 mg/kg will be evaluated.
干预措施: SYNB1353
Cohort 4
HV subjects receive doses 6 × 10\^11 live cells of SYNB1353 and up to 100 mg/kg of methionine. Subjects will receive a single dose of SYNB1353 on the first day of dosing (Day 1), on Days 2 and 3 subjects will receive up to 2 doses of IMP (BID), and on Days 4 to 7 subjects will receive up to 3 doses of IMP (TID). A methionine loading study will be performed on Day -1 and Day 7 after an overnight fast. A dose of methionine of up to 100 mg/kg will be evaluated.
干预措施: SYNB1353
Cohort 5
HV subjects receive doses 1 × 10\^12 live cells of SYNB1353 and 30 mg/kg of methionine. Subjects will receive a single dose of SYNB1353 on the first day of dosing (Day 1), on Days 2 and 3 subjects will receive up to 2 doses of IMP (BID), and on Days 4 to 7 subjects will receive up to 3 doses of IMP (TID). A methionine loading study will be performed on Day -1 and Day 7 after an overnight fast. A dose of methionine of 30 mg/kg will be evaluated.
干预措施: SYNB1353
Cohort 6
HV subjects receive doses 1 × 10\^12 live cells of SYNB1353 and up to 100 mg/kg of methionine. Subjects will receive a single dose of SYNB1353 on the first day of dosing (Day 1), on Days 2 and 3 subjects will receive up to 2 doses of IMP (BID), and on Days 4 to 7 subjects will receive up to 3 doses of IMP (TID). A methionine loading study will be performed on Day -1 and Day 7 after an overnight fast. A dose of methionine of up to 100 mg/kg will be evaluated.
干预措施: SYNB1353
Cohort 7
HV subjects receive doses less than or equal to 2 × 10\^12 live cells of SYNB1353 and 30 mg/kg of methionine. Subjects will receive a single dose of SYNB1353 on the first day of dosing (Day 1), on Days 2 and 3 subjects will receive up to 2 doses of IMP (BID), and on Days 4 to 7 subjects will receive up to 3 doses of IMP (TID). A methionine loading study will be performed on Day -1 and Day 7 after an overnight fast. A dose of methionine of 30 mg/kg will be evaluated.
干预措施: SYNB1353
Cohort 8
HV subjects receive doses less than or equal to 2 × 10\^12 live cells of SYNB1353 and up to 100 mg/kg of methionine. Subjects will receive a single dose of SYNB1353 on the first day of dosing (Day 1), on Days 2 and 3 subjects will receive up to 2 doses of IMP (BID), and on Days 4 to 7 subjects will receive up to 3 doses of IMP (TID). A methionine loading study will be performed on Day -1 and Day 7 after an overnight fast. A dose of methionine of up to 100 mg/kg will be evaluated.
干预措施: SYNB1353
结局指标
主要结局
Number of participants with abnormal laboratory values and/or adverse events
时间窗: Day -2 through Day 8
Lab results outside of the central laboratory normal range parameters will be considered abnormal and reviewed for clinical significance and reported as AEs. AEs will be evaluated using the NCI CTCAE v5.0
次要结局
- The rate at which the SYNB1353 strain clears(Up to 14 weeks following the last dose of IMP)