CI

At a glance

ClinicalIndex Comparison Record
Early Ph 1Completed· 28 enrolled
Drug / intervention
Talimogene laherparepvec +1 morebiological
Likely dose
Talimogene laherparepvec 4.0 mLfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03802604
NCT03802604Early Ph 1Completed

Combination of Talimogene Laherparepvec With Atezolizumab in Patients With Residual Breast Cancer After Standard Neoadjuvant Multi-agent Chemotherapy (PROMETEO TRIAL)

SOLTI Breast Cancer Research Group·interventional·Posted Jan 14, 2019·Updated Sep 9, 2025

In Brief

A Early Phase 1 clinical trial evaluating Talimogene laherparepvec and Atezolizumab for Breast Cancer. Completed, enrolled 28 participants across 4 sites.

Detailed Summary

PROMETEO is a window opportunity, single arm, exploratory study to evaluate the effect of T- VEC combined with Atezolizumab in women with operable early breast cancer who present residual disease after Neoadjuvant Chemotherapy (NAC). Other eligibility criteria include TNBC or LumB like primary tumor sized at least 1.5 cm, ECOG PS 0-1 and evaluable diagnostic tumor sample.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsBreast Cancer
CountriesSpain
CollaboratorsAmgen, Roche Pharma AG

Timeline

Early Ph 1CompletedFinished
20192020202120222023202420252026
First PostedJan 14, 2019
Enrollment StartDec 10, 2018
Primary CompletionApr 27, 2022
Study CompletionMar 18, 2025
TodayJul 2, 2026
Enrollment to primary: 3.4 yearsPosted 7.5 years ago

Interventions

Talimogene laherparepvecbiological

Talimogene laherparepvec will be given via intra-tumoral injection at an initial dose of 10\^6 PFU/mL. On week 3 (i.e. 21 days \[± 2\] days), a second talimogene laherparepvec injection will be administered at a dose of 10\^8 PFU/mL. Third, fourth and fifth injections will be administered every 2 weeks (every 14 \[± 2\] days). The maximum volume for each injection will be 4.0 mL.

Atezolizumabdrug

Atezolizumab 840 mg will be administered by IV infusion on Day1 week 3, then every 2 weeks (every 14 \[± 2\] days), for a total of 4 treatment courses.