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No longer recruiting (closed or complete)Last updated: 31 January 2024

ATOSSA: This trial is testing hormone therapy, using oral (Z)-Endoxifen, as a treatment for patients with invasive breast cancerAn open label, pilot and expansion pharmacodynamic Study of (Z)-endoxifen in Patients with Invasive Breast Cancer Prior to Undergoing Mastectomy or Lumpectomy

Trial purpose

Medical clipboardCancer treatment

Tumor type

Breast Cancers Breast

Age

People18+

Trial acronym

ATOSSA

Clinical summary

Summary

In this trial, patients will be given 4mg/day of oral (Z)-Endoxifen, for a minimum of 21 days until the day before surgery (inclusive).

Conditions

This trial is treating people with breast cancer

Eligibility

Inclusion

 

1.Females 18 years of age or older;
2. Histologically confirmed invasive breast cancer (stage 1 or 2, ER+ low- grade [grade 1 or 2]);
3. Pathological invasive breast cancer diagnosis requiring mastectomy or lumpectomy;
4. Newly diagnosed, tamoxifen naïve;
5. Scheduled to undergo mastectomy or lumpectomy for invasive breast cancer at no less
than 15 days from commencement of treatment with the study drug;
6. Estrogen Receptor positive biopsy, as determined from a biopsy specimen obtained no
more than 3 months prior to entry (>=1% of the cells by IHC);
7. HER2 negative (as determined by IHC and/or FISH from a biopsy specimen obtained no more than 3 months prior to entry;
8. Eastern Cooperative Oncology Group (ECOG) score 0-1, an estimated life expectancy of
at least 12 months;
9. Adequate organ function
10. Women with child-bearing potential must have a negative pregnancy test (urine or serum) within 7 days of drug administration and agree to use an acceptable method of birth control to avoid pregnancy for the duration of the study;
11. Provide consent for the collection of biopsy material;
12. Able to comprehend and sign the informed consent.

Exclusion

1. Diagnosis of inflammatory breast carcinoma;
2. Stage IV breast cancer;
3. Diagnosis of HER2 positive disease;
4. Palpable nodes or clinical suspicion of axillary node positivity;
5. Concurrent treatment with another anti-estrogen;
6. Presence of an infection including ulcerations and fungal infections in the breast to be studied;
7. Coagulopathies, bleeding diatheses, thrombocytopenia or current anticoagulant use;
8. Several hepatic impairments, defined as Child-Pugh Class C or worse;
9. Prior radiation to the breast or chest wall;
10. Known severe hypersensitivity to any drugs in this study;
11. Pregnant or lactating;
12. Impaired renal function;
13. Impaired cardiac function or history of cardiac problems;
14. Poor nutritional state (as determined by clinician);
15. Depressed bone marrow;
16. Presence of serious infection;
17. Presence of ascites (as determined by clinician);
18. Presence of pleural effusion;
19. Hepatic disease, positive serology (for hepatitis B surface antigen [HBsAg], hepatitis C virus [HCV] antibodies) or known active disease due to hepatitis B virus, hepatitis C virus, auto-immune liver disease or sclerosing cholangitis;
20. Positive serology for human immunodeficiency virus (HIV) or known active disease due to HIV infection;
21. Major operation, obvious trauma within 28 days before randomization;
22. Concurrent participation in an experimental drug study;
23. Any reasons for which the investigator considers the volunteer is not suitable for the study.
24. Concurrent chemotherapy.
25. History of previous thromboembolic events.

Exclusion

  • You have been diagnosed with a prior or secondary type of cancer.
  • You have certain types of non-cancer medical conditions.
  • You have had certain treatments, surgical procedures or drugs.
Message

Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.

Participating hospitals

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No longer recruiting (closed or complete) hospitals

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More information

Trial Identifiers

Information on this page is partially produced from ANZCTR *. View further details about this trial on the registry via the links below:

Trial sponsor

Atossa Genetics, Inc.

Scientific Title

An open label, pilot and expansion pharmacodynamic Study of (Z)-endoxifen in Patients with Invasive Breast Cancer Prior to Undergoing Mastectomy or Lumpectomy

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