← Back to Search

Virus Therapy

Safety and Tolerability of SYNB1891 Injection Alone or in Combination With Atezolizumab in Adult Participants

Phase 1
Waitlist Available
Research Sponsored by Synlogic
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up up to 13 months
Awards & highlights
All Individual Drugs Already Approved
No Placebo-Only Group

Summary

This trial tests SYNB1891 alone or with atezolizumab in patients with severe cancers. SYNB1891 is injected into tumors to boost the immune response, and atezolizumab helps the immune system fight cancer. Atezolizumab was the first approved treatment for this purpose, showing benefits in treating certain types of lung cancer.

Eligible Conditions
  • Cancer
  • Lymphoma

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~up to 13 months
This trial's timeline: 3 weeks for screening, Varies for treatment, and up to 13 months for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Number of Participants With Dose-limiting Toxicity
Secondary study objectives
Number of Participants With Best Tumor Response as Measured by the Response Evaluation Criteria in Solid Tumors (RECIST 1.1)
Number of Participants With Treatment-Emergent Adverse Events

Side effects data

From 2019 Phase 3 trial • 1225 Patients • NCT02008227
36%
Fatigue
35%
Alopecia
24%
Diarrhoea
23%
Nausea
23%
Decreased appetite
22%
Anaemia
20%
Asthenia
19%
Cough
19%
Dyspnoea
16%
Myalgia
15%
Neutropenia
14%
Constipation
14%
Oedema peripheral
12%
Pyrexia
11%
Stomatitis
11%
Vomiting
11%
Neuropathy peripheral
10%
Arthralgia
9%
Neutrophil count decreased
9%
Rash
8%
Dysgeusia
8%
Headache
8%
Paraesthesia
7%
Pain in extremity
7%
Mucosal inflammation
7%
Back pain
7%
Peripheral sensory neuropathy
7%
Insomnia
6%
Febrile neutropenia
6%
Pneumonia
6%
Lacrimation increased
6%
Abdominal pain
6%
Dry skin
6%
Dizziness
5%
Malaise
5%
Urinary tract infection
5%
Weight decreased
5%
Haemoptysis
5%
Nail disorder
4%
Chest pain
4%
Nasopharyngitis
4%
Musculoskeletal pain
4%
Bronchitis
4%
Productive cough
3%
Upper respiratory tract infection
3%
Pruritus
2%
Influenza like illness
2%
Alanine aminotransferase increased
2%
Aspartate aminotransferase increased
1%
Syncope
1%
Dehydration
1%
Atrial fibrillation
1%
Lower respiratory tract infection
1%
Lung infection
1%
Respiratory tract infection
1%
Acute kidney injury
1%
Chronic obstructive pulmonary disease
1%
Pleural effusion
1%
Depression
1%
Musculoskeletal chest pain
100%
80%
60%
40%
20%
0%
Study treatment Arm
Docetaxel
Atezolizumab

Awards & Highlights

All Individual Drugs Already Approved
Therapies where all constituent drugs have already been approved are likely to have better-understood side effect profiles.
No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.

Trial Design

2Treatment groups
Experimental Treatment
Group I: Arm 2: SYNB1891 in Combination with AtezolizumabExperimental Treatment2 Interventions
SYNB1891 was administered as an IT injection on Days 1, 8, and 15 of Cycle 1 and Day 1 of subsequent cycles for up to 24 months/35 cycles. The dose of SYNB1891 in the first cohort was 1 × 10\^7 live cells and was increased in an approximately 3-fold increment to 3 × 10\^7 live cells in the second cohort. Atezolizumab was administered in accordance with its recommended dose and schedule (1200 mg IV Q3W) on Day 1 of each cycle for up to 24 months/35 cycles. On days when atezolizumab and SYNB1891 were both administered, SYNB1891 was administered first, followed by at least 1 hour of observation prior to the atezolizumab infusion.
Group II: Arm 1: SYNB1891 MonotherapyExperimental Treatment1 Intervention
SYNB1891 monotherapy was administered as an IT injection on Days 1, 8, and 15 of Cycle 1 and Day 1 of subsequent cycles for up to 24 months/35 cycles. The starting dose of SYNB1891 in the first cohort was 1 × 10\^6 live cells and was increased in approximately 3-fold increments in subsequent cohorts.
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Atezolizumab
FDA approved

Find a Location

Who is running the clinical trial?

IQVIA BiotechIndustry Sponsor
20 Previous Clinical Trials
5,703 Total Patients Enrolled
SynlogicLead Sponsor
9 Previous Clinical Trials
425 Total Patients Enrolled
Aoife Brennan, MB, BCh, BAO, MMScStudy DirectorSynlogic
Richard Riese, MDStudy DirectorSynlogic
~5 spots leftby Dec 2025