Phase I Study of the Safety, Tolerability, and Efficacy of an Engineered Mitochondrial Vaccine in Advanced Solid Tumors

Trial statusRecruiting
Trial phasePhase 1
Trial typeInterventional
Biological sexAll
Age18-75
SponsorWest China Hospital

About this trial

This study is a dose-escalation, prospective clinical trial to assess the safety, tolerability, and preliminary therapeutic efficacy of engineered mitochondria expressing specific tumor antigen in patients with advanced solid tumors.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Patients aged 18 to 75 years at the time of acquisition informed consent form.

Patients with advanced malignant solid tumors such as non-small cell lung cancer or colorectal cancer, confirmed by histology or cytology, who are unable to receive or tolerate standard treatments, or who refuse standard treatments, exhibit positive expression of target antigens in the tumor tissue.

The presence of at least one measurable or evaluable lesion according to RECIST v1.1 criteria.

Eastern Cooperative Oncology Group (ECOG) performance status score: 0-2.

Disqualifiers

The patient has a history of other tumors in the past, except for the history of malignant tumors that have been cured and have not recurred within 5 years before screening, such as basal cell carcinoma of the skin, squamous cell carcinoma of the skin, superficial bladder cancer, cervical cancer in situ, and intramucosal cancer of the gastrointestinal tract, which the investigator considers to be eligible for enrollment.

Have any uncontrolled clinical diseases (e.g., diseases of the respiratory system, circulatory system, digestive system, nervous system, hematologic system, urogenital system, endocrine system) or psychiatric or other major medical condition that the investigator considers to interfere with the provision of informed consent, to interfere with the interpretation of the trial results, to pose a risk to the study participants, or to otherwise interfere with the achievement of the study objectives.

Have any active autoimmune disease or a history of autoimmune disease. Participants with asthma for which medical intervention with bronchodilators was required could not be included.

Allergy to the trial drug (including any excipients). Previous history of severe allergy to any drug, food or vaccination, such as anaphylactic shock, allergic laryngeal edema, allergic dyspnea, allergic purpura, thrombocytopenic purpura, local allergic necrosis reaction (Arthus reaction), etc.

Trial design

Design model

Sequential

Treatments tested in this trial

  • Engineered mitochondrial vaccine

    Biological/Vaccine

    Participants were assigned to one of four dose-escalation groups (25 μg, 50 μg, 100 μg, or 200 μg per dose) and received subcutaneous injections of the engineered mitochondrial vaccine in a prime-boost schedule. The regimen consisted of 3 doses of primary immunization, 1 dose of boost immunization and subsequent personalized treatment.

Treatment groups

12 Participants
are divided into 1 treatment group
Group A: Cohort group of engineered mitochondria vaccine for dose-escalationExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Adverse events

Time frame
1 year

Secondary outcomes

1

Objective Response Rate (ORR)

The ratio of participants assessed with complete response (CR) or partial response (PR) as a best overall response.

Time frame
6 months
2

Disease Control Rate (DCR)

The ratio of subjects assessed with CR or PR or stable disease (SD) as a best overall response.

Time frame
6 months
3

PFS

PFS is defined as the duration until disease progression or death in participants from the first dose of immunization.

Time frame
6 months
4

OS

OS is defined as the duration until death in participants from the first dose of immunization.

Time frame
1 year

Other outcomes

Sponsors and contacts

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