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A Phase I/II Trial Investigating LOAd703 in Combination With Atezolizumab in Malignant Melanoma

A Phase I/II Trial Investigating LOAd703 in Combination With Atezolizumab in Malignant Melanoma

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04123470
Enrollment
24
Registered
2019-10-11
Start date
2020-01-28
Completion date
2023-07-30
Last updated
2024-09-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Malignant Melanoma

Brief summary

This study aims to evaluate safety and effect of combining an oncolytic adenovirus (delolimogene mupadenorepvec; LOAd703) with atezolizumab in patients with melanoma. LOAd703 will be administered intratumorally for up to 12 injections while atezolizumab will be administered intravenously for the duration of the active study visits (up to 57 weeks). The patients are then monitored for survival for maximum study participation of 48 months. The treatments will be given every 3 weeks. The patients will then be monitored for toxicity, PK, ADA, immune responses, virus shedding, tumor response by RECIST 1.1 and survival.

Detailed description

This is a single arm, open-label, multicenter trial. This study aims to evaluate safety and effect of combining an oncolytic adenovirus (delolimogene mupadenorepvec; LOAd703) with atezolizumab in patients with melanoma. Patients will receive up to 12 LOAd703 intratumoral treatments in combination with intravenous infusions of atezolizumab. LOAd703 will be tested at two dose levels to determine the maximum tolerated dose (MTD) of LOAd703 evaluated in the study using a BOIN design. The LOAd703 dose can be divided for intratumoral injection into as many as 3 tumor lesions. Atezolizumab will be tested at a fixed dose. At least 25 response evaluable patients will be enrolled at the MTD for evaluation of their response using binominal testing. The maximum number of evaluable patients in the study is 35. The patients will then be monitored for toxicity, PK, ADA, immune responses, virus shedding, tumor response by RECIST 1.1 and survival.

Interventions

LOAd703 is an oncolytic adenovirus encoding TMZ-CD40L and 4-1BBL

BIOLOGICALatezolizumab

Atezolizumab is an anti-PD-L1 antibody

Sponsors

Precision Oncology LLC
CollaboratorINDUSTRY
Lokon Pharma AB
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Participants treated with LOAd703 at two dose levels (1x10e11 VP and 5x10e11VP) and fixed dose of atezolizumab

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Pathological confirmation of melanoma. 2. A life expectancy of at least 3 months as per the investigator 3. Valid for Swedish patients: Patients has locally advanced melanoma or metastatic melanoma, but not eligible for complete resection of melanoma Valid for US patients: Patients has locally advanced melanoma or metastatic melanoma. 4. The patient has measurable disease (e.g., measurable tumor lesions must be present that can accurately be measured in at least one dimension with a minimum size of 10 mm by CT scan and MRI, 10 mm caliper measurement by clinical exam (when superficial), and/or 20 mm by chest X-ray). 5. Patient has at least one injectable tumor lesion that has not been irradiated or has been irradiated but disease progression documented at the site subsequent to radiation therapy. 6. The patient has received appropriate treatment with an anti-PD-1 or anti-PD-L1 antibody with or without an anti-CTLA4. 7. Valid for Swedish patients: Patients whose advanced melanoma has a B-Raf mutation must have received appropriate therapy with tyrosine kinase inhibitor(s) and/or MEK inhibitor Valid for US patients: Patients whose advanced melanoma has a B-Raf mutation may have received appropriate therapy with tyrosine kinase inhibitor(s) and/or MEK inhibitor as assessed by the investigator. 8. Age ≥ 18 years. 9. Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1. 10. Serum albumin ≥ 2.5 mg/dL. 11. Absolute neutrophil count (ANC) ≥1.0 x 10e9/L. 12. Platelet count ≥ 100 x 10e9/L. 13. Prothrombin (INR) ≤ 1.5 or prothrombin time (PT) ≤ 1.5 times ULN; and either partial thromboplastin time or activated partial thromboplastin time (PTT or aPTT) ≤ 1.5 times the ULN. 14. Bilirubin \< 1.5 times the institutional upper limit of normal (ULN). 15. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤2.5 (≤ 5 if liver metastases are present) times the institutional ULN. 16. The patient must have signed informed consent.

Exclusion criteria

1. Malignant melanoma that is uveal. 2. Subjects considered by the investigator to have rapid clinical progression due to melanoma 3. Subjects must not have greater than 3 cerebral melanoma metastases, and/or clinically active cerebral melanoma metastases, and/or a requirement for corticosteroid therapy, and/or carcinomatous meningitis regardless of clinical stability. 4. Any concurrent treatment that would interfere with the effect mechanisms of atezolizumab and LOAd703, including, but not limited to, continuous high-dose corticosteroids (\>10 mg per day), lymphodepleting antibodies, or cytotoxic agents. 5. Treatment with inhibitors of immune function, such as lymphotoxic monoclonal antibodies (e.g., alemtuzumab), or rapamycin/rapamycin analogs, or cytotoxic agents within 21 days of the first dose of LOAd703/atezolizumab. 6. Therapeutic treatment with systemic antibiotics within 14 days of the first dose of LOAd703/atezolizumab. 7. Treatment with biologic therapy within 21 days of the first dose of LOAd703/atezolizumab. 8. Treatment with cytotoxic anticancer therapy within 14 days of the first dose of LOAd703/atezolizumab. 9. Treatment with wide-field radiation within 14 days of the first dose of LOAd703/atezolizumab. 10. Prior treatment with an adenovirus-based gene therapy. 11. Use of any investigational agents within 21 days of the first dose of LOAd703/atezolizumab. 12. The use of systemic immunostimulatory agents (including, but not limited to, interferons and IL2) are prohibited within 21 days or 5 half-lives (whichever is longer) of the first dose of LOAd703/atezolizumab. 13. Failed resolution/improvement of AEs including those related to anti-PD-1/anti-PD-L1 to grade 0-1 and requirement for treatment with \>10 mg/day prednisone (or equivalent) for at least two weeks prior to registration. 14. History of CTCAE grade 4 immune-related AEs from monotherapy using an anti-PD-1/anti-PD-L1 antibody. 15. History of CTCAE grade 4 AE that require steroid treatment (\>10 mg/day prednisone or equivalent) for \>12 weeks. 16. Patients requiring warfarin are not eligible (low molecular weight heparin is permitted). 17. Women who are pregnant (as confirmed by pregnancy test during screening in applicable patients), breastfeeding, or planning to become pregnant during the study period, or women of childbearing potential who are not using acceptable highly effective contraceptive methods. A woman is considered of childbearing potential if she is not surgically sterile or is less than 1 year since her last menstrual period. The following are acceptable as highly effective contraceptive methods: combined (estrogen- and progesterone-containing) hormonal contraception associated with inhibition of ovulation (oral, intravaginal, transdermal), progesterone-only hormonal contraception associated with inhibition of ovulation (oral, injectable, implantable), intrauterine device, intrauterine hormone-releasing system, bilateral tubal occlusion and vasectomized partner or abstinence of heterosexual intercourse during the entire study period (depending on the preferred and usual life style of the subject). 18. Men who do not consent to the use of condoms during intercourse during study participation or has a partner of childbearing potential, who will not use any of the highly effective contraceptive methods exemplified in

Design outcomes

Primary

MeasureTime frameDescription
Tolerability Evaluated by NCI CTCAE v5.0Up to 57 weeks post treatment initiationThe AE reporting period begins upon receiving the first LOAd703 and/or atezolizumab treatment and continues until final visit at week 57

Secondary

MeasureTime frameDescription
Overall SurvivalFrom treatment initiation until last patient last visit, assessed up till 36 monthsSurvival status of patients. Overall survival is defined as the time from the first dose of study treatment (LOAd703 and/or atezolizumab) until death.
Antibodies Against LOAd703Up to 57 weeks post treatment initiationFold change between baseline and evaluation visit for anti-adenovirus antibodies (LOAd703). The baseline is the last available measurement taken before the first LOAd703 treatment. Evaluation is a measurement taken from subjects receiving at least 3 LOAd703 treatments.
Overall Response RateUp to 57 weeks post treatment initiationTumor size evaluations accordingly to RECIST 1.1.Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Stable disease (SD), Neither PR nor progressive disease, Progressive disease (PD), \>20% increase in the sum of the longest diameter of target lesions. Overall Response (OR) = number of participants with CR or PR.
Virus SheddingUp to 57 weeks post treatment initiationNumber of samples analyzed that were positive for virus particles in shedding samples.
Overall Survival (Number of Participants With Event)From treatment initiation until last patient last visit, assessed up till 36 monthsSurvival status of patients described by number of participants with event.
Immune Cell PhenotypeUp to 57 weeks post treatment initiationThe ratio for CD8+/Treg cells analyzed in blood at baseline and evaluation visit as determined by flow cytometry. The baseline is the last available measurement taken before the first LOAd703 treatment. Evaluation is a measurement taken from subjects receiving at least 3 LOAd703 treatments.

Countries

Sweden, United States

Participant flow

Pre-assignment details

Overall, a total of 26 subjects signed the informed consent, 2 out of 26 subjects were screening failures and 24 out of 26 subjects were enrolled in the study.

Participants by arm

ArmCount
Group 1 LOAd703 1x10e11 VP Plus Atezolizumab
Delolimogene mupadenorepvec (1x10e11 VP) plus atezolizumab delolimogene mupadenorepvec: LOAd703 is an oncolytic adenovirus encoding TMZ-CD40L and 4-1BBL atezolizumab: Atezolizumab is an anti-PD-L1 antibody
7
Group 2 LOAd703 5x10e11 VP Plus Atezolizumab
Delolimogene mupadenorepvec (5x10e11 VP) plus atezolizumab delolimogene mupadenorepvec: LOAd703 is an oncolytic adenovirus encoding TMZ-CD40L and 4-1BBL atezolizumab: Atezolizumab is an anti-PD-L1 antibody
17
Total24

Withdrawals & dropouts

PeriodReasonFG000FG001
Group 1: LOAd703 Dose Level 1x10e11 VPDeath40
Group 2: LOAd703 Dose Level 5x10e11 VPDeath07
Group 2: LOAd703 Dose Level 5x10e11 VPLost to Follow-up01
Group 2: LOAd703 Dose Level 5x10e11 VPWithdrawal by Subject01

Baseline characteristics

CharacteristicGroup 2 LOAd703 5x10e11 VP Plus AtezolizumabTotalGroup 1 LOAd703 1x10e11 VP Plus Atezolizumab
Age, Continuous60.0 years
STANDARD_DEVIATION 13.4
61.5 years
STANDARD_DEVIATION 12.6
65.3 years
STANDARD_DEVIATION 10.2
Disease stage at initial diagnosis
Stage 0
1 Participants1 Participants0 Participants
Disease stage at initial diagnosis
Stage I
3 Participants5 Participants2 Participants
Disease stage at initial diagnosis
Stage II
2 Participants2 Participants0 Participants
Disease stage at initial diagnosis
Stage III
8 Participants12 Participants4 Participants
Disease stage at initial diagnosis
Stage IV
2 Participants3 Participants1 Participants
Disease stage at initial diagnosis
Unknown
1 Participants1 Participants0 Participants
Disease stage at study entry
Stage III
0 Participants0 Participants0 Participants
Disease stage at study entry
Stage IV
17 Participants24 Participants7 Participants
Disease stage at study entry
Unknown
0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants1 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
12 Participants19 Participants7 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
4 Participants4 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants2 Participants0 Participants
Race (NIH/OMB)
White
14 Participants21 Participants7 Participants
Region of Enrollment
Sweden
12 participants17 participants5 participants
Region of Enrollment
United States
5 participants7 participants2 participants
Sex: Female, Male
Female
9 Participants11 Participants2 Participants
Sex: Female, Male
Male
8 Participants13 Participants5 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
4 / 77 / 17
other
Total, other adverse events
7 / 717 / 17
serious
Total, serious adverse events
2 / 75 / 17

Outcome results

Primary

Tolerability Evaluated by NCI CTCAE v5.0

The AE reporting period begins upon receiving the first LOAd703 and/or atezolizumab treatment and continues until final visit at week 57

Time frame: Up to 57 weeks post treatment initiation

ArmMeasureGroupValue (NUMBER)
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 51 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 40 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0All Adverse Events (AEs)52 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0All Serious Adverse Events (SAEs)6 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0Serious Adverse Reactions (SARs) Related to LOAd7030 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0Serious Adverse Reactions (SARs) Related to Atezolizumab0 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Leading to Withdrawal from the Study0 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Leading to LOAd703 Discontinuation4 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Leading to Atezolizumab Discontinuation6 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Leading to Death1 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd70328 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab20 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 and/or Atezolizumab30 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 117 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 211 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 30 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 40 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 50 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 110 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 210 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 50 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 17 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 27 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 37 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 40 Number of Events
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 30 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 214 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 31 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 140 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 50 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 40 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0All Adverse Events (AEs)130 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 222 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0All Serious Adverse Events (SAEs)11 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 213 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0Serious Adverse Reactions (SARs) Related to LOAd7032 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 32 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0Serious Adverse Reactions (SARs) Related to Atezolizumab1 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 50 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Leading to Withdrawal from the Study0 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 40 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Leading to LOAd703 Discontinuation4 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 42 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Leading to Atezolizumab Discontinuation4 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 - Grade 50 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Leading to Death0 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 132 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd70364 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab - Grade 126 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to Atezolizumab41 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Not Related to LOAd703 or Atezolizumab - Grade 311 Number of Events
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabTolerability Evaluated by NCI CTCAE v5.0AEs Related to LOAd703 and/or Atezolizumab72 Number of Events
Secondary

Antibodies Against LOAd703

Fold change between baseline and evaluation visit for anti-adenovirus antibodies (LOAd703). The baseline is the last available measurement taken before the first LOAd703 treatment. Evaluation is a measurement taken from subjects receiving at least 3 LOAd703 treatments.

Time frame: Up to 57 weeks post treatment initiation

ArmMeasureValue (MEAN)Dispersion
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabAntibodies Against LOAd7039.05 fold changeStandard Deviation 1.73
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabAntibodies Against LOAd70315.86 fold changeStandard Deviation 9.81
Secondary

Immune Cell Phenotype

The ratio for CD8+/Treg cells analyzed in blood at baseline and evaluation visit as determined by flow cytometry. The baseline is the last available measurement taken before the first LOAd703 treatment. Evaluation is a measurement taken from subjects receiving at least 3 LOAd703 treatments.

Time frame: Up to 57 weeks post treatment initiation

ArmMeasureValue (MEAN)Dispersion
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabImmune Cell Phenotype7.63 ratioStandard Deviation 1.42
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabImmune Cell Phenotype14.86 ratioStandard Deviation 10.36
Group 1 LOAd703 1x10e11 VP Plus Atezolizumab - EvaluationImmune Cell Phenotype8.11 ratioStandard Deviation 1.23
Group 2 LOAd703 5x10e11 VP Plus Atezolizumab - EvaluationImmune Cell Phenotype25.37 ratioStandard Deviation 20.15
Secondary

Overall Response Rate

Tumor size evaluations accordingly to RECIST 1.1.Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Stable disease (SD), Neither PR nor progressive disease, Progressive disease (PD), \>20% increase in the sum of the longest diameter of target lesions. Overall Response (OR) = number of participants with CR or PR.

Time frame: Up to 57 weeks post treatment initiation

Population: ORR was evaluated in participants receiving at least 3 doses of LOAd703 and/or atezolizumab with available tumor assessment data.~Group 1 (1x10e11 VP): from a total of 7 participants, 6 met the criteria to be included in this analysis Group 2 (5x10e11 VP): from a total of 17 participants, 15 met the criteria to be included in this analysis

ArmMeasureValue (NUMBER)
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabOverall Response Rate16.7 Percentage of Participants
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabOverall Response Rate20.0 Percentage of Participants
Secondary

Overall Survival

Survival status of patients. Overall survival is defined as the time from the first dose of study treatment (LOAd703 and/or atezolizumab) until death.

Time frame: From treatment initiation until last patient last visit, assessed up till 36 months

Population: OS was evaluated in participants receiving at least 3 doses of LOAd703 and/or atezolizumab with available tumor assessment data.~Group 1 (1x10e11 VP): from a total of 7 participants, 6 met the criteria to be included in this analysis Group 2 (5x10e11 VP): from a total of 17 participants, 15 met the criteria to be included in this analysis

ArmMeasureValue (MEDIAN)
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabOverall Survival26.05 Months
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabOverall SurvivalNA Months
Secondary

Overall Survival (Number of Participants With Event)

Survival status of patients described by number of participants with event.

Time frame: From treatment initiation until last patient last visit, assessed up till 36 months

ArmMeasureGroupValue (NUMBER)
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabOverall Survival (Number of Participants With Event)Number of Subjects with Event (death)4 Number of Participants
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabOverall Survival (Number of Participants With Event)Number of Subjects Censored (at the last date known to be alive)3 Number of Participants
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabOverall Survival (Number of Participants With Event)Number of Subjects with Event (death)7 Number of Participants
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabOverall Survival (Number of Participants With Event)Number of Subjects Censored (at the last date known to be alive)10 Number of Participants
Secondary

Virus Shedding

Number of samples analyzed that were positive for virus particles in shedding samples.

Time frame: Up to 57 weeks post treatment initiation

ArmMeasureValue (NUMBER)
Group 1 LOAd703 1x10e11 VP Plus AtezolizumabVirus Shedding0 number of samples
Group 2 LOAd703 5x10e11 VP Plus AtezolizumabVirus Shedding2 number of samples
Group 1 LOAd703 1x10e11 VP Plus Atezolizumab - EvaluationVirus Shedding0 number of samples
Group 2 LOAd703 5x10e11 VP Plus Atezolizumab - EvaluationVirus Shedding1 number of samples
Group 1 LOAd703 1x10e11 VP Plus Atezolizumab - Rectal SampleVirus Shedding0 number of samples
Group 2 LOAd703 5x10e11 VP Plus Atezolizumab - Rectal SampleVirus Shedding1 number of samples

Source: ClinicalTrials.gov · Data processed: May 29, 2026