DIAmOND - Clinical trial • Breast Cancer Foundation NZ

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DIAmOND

Advanced Breast Cancer clinical trials for HER2+

Recruiting
Updated: June 30, 2020

This study aims to find out if the combination of anti-HER2 therapy with PD-L1 inhibitor and CTLA4 inhibitor will reactivate anti-tumour immune response and improve clinical outcomes in trastuzumab-resistant, advanced HER2+ breast cancer.

This study aims to find out if the combination of trastuzumab (anti-HER2 therapy) with durvalumab (PD-L1 inhibitor) and tremelimumab (CTLA4 inhibitor) will reactivate anti-tumour immune response and improve clinical outcomes in trastuzumab-resistant, advanced HER2-positive breast cancer.

Who is it for?

You may be eligible for this study if you are 18 years or older, male or female, and have HER2+ metastatic or incurable breast cancer that has progressed on previous trastuzumab treatment.

Study details

Up to four weeks before starting study treatment, all participants will have either a CT Scan, MRI, or PET with dedicated CT Scan, provide a research tumour biopsy of the cancer (taken within one year of starting the study) and research blood tests.

Induction phase:
During this phase, participants will receive:

  1. 4 doses of durvalumab (1 dose every 4 weeks), administered intravenously;
  2. 4 doses of tremelimumab (1 dose every 4 weeks), administered intravenously;
  3. 16 doses of trastuzumab (1 dose every week), administered intravenously.
Oestrogen-receptor-positive patients will also start or continue endocrine therapy (aromatase inhibitor and/or GnRH agonist).

Participants will be clinically assessed prior to each study treatment. Two core biopsies, if feasible, will be taken from the same site as the initial biopsy about three weeks after starting study treatment. A research blood sample will be taken before the 3rd dose of study treatment.

Treatment phase:

Participants will receive durvalumab and trastuzumab every three weeks for 12 doses (total 36 weeks). Tremelimumab will not be given. Participants will be clinically assessed prior to each study treatment. . A research blood sample will be taken every nine weeks, before each dose of study treatment. During the study, heart function tests (ECHO or MUGA) will be performed every three months as per standard of care, or as clinically indicated.

The full length of treatment is 52 weeks (one year). After completing study treatment, patients will be followed every three months by either clinic visits or via telephone.

For full trial information

Australia

Austin Hospital, Heidelberg
Bendigo Hospital, Bendigo
Fiona Stanley Hospital, Murdoch
Flinders Medical Centre, Bedford Park
Mater Cancer Care Centre , South Brisbane
Peter MacCallum Cancer Centre, Melbourne
Royal Hobart Hospital, Hobart
St George Hospital, Kogarah
Sunshine Coast University Hospital, Birtinya
Westmead Hospital, Westmead

Contact:

Corinna Beckmore

If you think you might be a candidate for this trial, use the contact details supplied, or talk to your doctor.

Want to access a trial that's not in your area? It's not always possible, but if you're interested, email us at intouch@bcf.org.nz

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Are we out of date? If you have updated or new information about a trial, we’d be grateful if you’d share it with us – email your update to intouch@bcf.org.nz

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