DETERMINE Trial Treatment Arm 2: Atezolizumab in Adult, Teenage/Young Adults and Paediatric Patients With Cancers With High Tumour Mutational Burden (TMB) or Microsatellite Instability-high (MSI-high) or Proven Constitutional Mismatch Repair Deficiency (CMMRD) Disposition

Program Status

Recruiting

Phase

Phase 2 Phase 3

Prior Immunotherapy Allowed

No

CRC-directed Trial

Yes

Drugs

Atezolizumab

Tags

MSI-H/ MMRd

Comments

Trial only in the U.K, several locations, only for patients with MSI-H/MMRd or high tumour mutational burden (TMB, defined as ≥10 mut/Mb) cancer (not MSS).

Patients will receive atezolizumab (anti PD-L1, immunotherapy), brand name Tecentriq.

Location Location Status
United Kingdom
Belfast City Hospital
Belfast BT9 7AB
Not yet recruiting
University Hospital Birmingham
Birmingham B15 2TT
Recruiting
Birmingham Children's Hospital
Birmingham
Not yet recruiting
Bristol Royal Hospital for Children
Bristol BS2 8BJ
Recruiting
Bristol Haematology and Oncology Centre
Bristol BS2 8ED
Recruiting
Addenbrooke's Hospital
Cambridge CB2 OQQ
Recruiting
Velindre Cancer Centre
Cardiff CF14 2TL
Recruiting
Cardiff Children's Hospital
Cardiff CF14 4XW
Not yet recruiting
Western General Hospital
Edinburgh EH4 2XU
Recruiting
The Beatson Hospital
Glasgow G12 OYN
Recruiting
Royal Hospital for Children Glasgow
Glasgow G51 4TF
Recruiting
Leicester Royal Infirmary
Leicester LE1 5WW
Recruiting
Alder Hey Hospital
Liverpool L14 5AB
Recruiting
The Royal Marsden Hospital
London Borough of Sutton SM2 5PT
Recruiting
University College London Hospital
London NW1 2BU
Recruiting
Guy's Hospital
London SE1 9RT
Recruiting
Great Ormond Street Hospital
London WC1N 3JH
Recruiting
Royal Manchester Children's Hospital
Manchester M13 9WL
Not yet recruiting
The Christie Hospital
Manchester M20 4BX
Recruiting
Great North Children's Hospital
Newcastle NE1 4LP
Recruiting
Freeman Hospital
Newcastle NE7 7DN
Recruiting
Churchill Hospital
Oxford OX3 7LE
Recruiting
John Radcliffe Hospital
Oxford OX3 9DU
Recruiting
Weston Park Hospital
Sheffield S10 2SJ
Recruiting
Sheffield's Children's Hospital
Sheffield S10 2TH
Recruiting
Southampton General Hospital
Southampton SO16 6YD
Recruiting
Clatterbridge Cancer Centre
Wirral CH63 4JY
Recruiting

Contacts

Aida Sarmiento Castro
CONTACT
+442034695101 determine@cancer.org.uk

Inclusion Criteria

THE PATIENT MUST FULFIL THE ELIGIBILITY CRITERIA WITHIN THE DETERMINE MASTER PROTOCOL (NCT05722886) AND WITHIN THE TREATMENT ARM 02 (ATEZOLIZUMAB) OUTLINED BELOW*

*When atezolizumab-specific inclusion/

Exclusion Criteria

exclusion criteria or precautions below differ from those specified in the Master Protocol, the atezolizumab-specific criteria will take precedence.

Inclusion Criteria:

A. Confirmed diagnosis of a malignancy that is high TMB (defined as ≥10 mut/Mb), MSI-high or of proven (previously diagnosed) CMMRD disposition using an analytically validated method.

B. Women of childbearing potential are eligible provide they meet the following criteria:

* Have a negative serum or urine pregnancy test before enrolment and;
* Agree to use one form of effective birth control method such as:

I. combined (oestrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation ([oral, intravaginal or transdermal]);

II. progestogen-only hormonal contraception associated with or without inhibition of ovulation (oral, injectable or implantable);

III. intrauterine device (IUD),

IV. intrauterine hormone-releasing system (IUS),

V. bilateral tubal occlusion,

VI. vasectomised partner,

VII. sexual abstinence,

VIII. male or female condom with or without spermicide;

IX. cap, diaphragm or sponge with spermicide.

Effective from the first administration of atezolizumab, throughout the trial and for five months after the last administration of atezolizumab.

C. Male patients with partners who are women of childbearing potential are eligible provided that they agree to the following, from the first administration of atezolizumab, throughout the trial until the last administration of atezolizumab:

* Agree to take measures not to father children by using a barrier method of contraception (condom plus spermicide) or sexual abstinence.
* Non-vasectomised male patients with partners who are women of childbearing potential must also be willing to ensure that their partner uses an effective method of contraception.
* Male patients with pregnant or lactating partners must be advised to use barrier method contraception (e.g. condom) to prevent drug exposure of the foetus or neonate.

All male patients must refrain from donating sperm for the same period.

D. Patients must be able and willing to undergo a fresh tissue biopsy.

E. ADULT PATIENTS (≥18 years): Adequate organ function as per haematological and biochemical indices within the ranges shown below. These measurements should be performed to confirm the patient's eligibility.

Haemoglobin (Hb): ≥90 g/L (transfusion allowed)

Lymphocyte count: ≥0.5 × 10^9/L

Absolute neutrophil count (ANC): ≥1.5 × 10^9/L (no granulocyte colony-stimulating factor [GCSF] support in preceding 72 hours)

Platelet count: ≥100 × 10^9/L

Bilirubin: <1.5 × upper limit of normal (ULN). Patients with known Gilbert disease: total bilirubin ≤3 × ULN

Serum albumin: ≥25 g/L (2.5 g/dL)

Alanine aminotransferase (ALT) and aspartate aminotransferase (AST): ≤2.5 × ULN or ≤5 × ULN if raised due to metastases

Coagulation - prothrombin (PT) (or international normalized ratio [INR]) and activated partial thromboplastin clotting time (aPTT): ≤1.5 × ULN (unless patient is on anticoagulants, e.g. warfarin [INR should be stable and within indicated therapeutic range] or direct oral anticoagulants [DOAC]).

Amylase: ≤1.5 × ULN

Estimated glomerular filtration rate (eGFR): ≥30 mL/min

F. PAEDIATRIC PATIENTS (

NCT ID

NCT05770102

Date Trial Added

2023-03-15

Updated Date

2025-05-22