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Not yet recruitingNCT07596212Updated Aug 24, 2026

BRE-06: Study to Increase Tolerance to Aromatase Inhibitors for Patients With Early-Stage Hormone Receptor Positive Breast Cancer Who Developed Hypoactive Sexual Desire Disorder

A Phase 1/2 interventional study of Aromatase Inhibitors and Bupropion in Early-stage Breast Cancer, Hypoactive Sexual Desire Disorder and Hormone Receptor Positive Breast Carcinoma, sponsored by University of Illinois at Chicago. Not yet recruiting at 1 site in United States. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-24.

Sponsored by University of Illinois at Chicago · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
100
Allocation
Randomized
Ages
18 Years and older
Sex
Female
01

Study summary

This study is open to women who have early-stage breast cancer and are on aromatase inhibitor (AI) therapy, and who have hypoactive sexual desire disorder (HSDD). HSDD is a persistent lack of physical desire for sex and a lack of sexual activity, or even sexual thoughts or fantasies, that causes you distress. The researchers want to determine if sexual functioning, as measured by responses on a sexual functioning questionnaire, is improved by adding Bupropion Extended Release (XL) to the AI treatment regimen. Bupropion XL is an FDA-approved medication for the treatment of major depressive disorder, seasonal affective disorder, and nicotine dependence. It has been studied in HSDD in pre- and post-menopausal healthy women, and has been demonstrated to be effective, but it has not been thoroughly studied in women with early-stage breast cancer on AI therapy.

Read the detailed description

Patients diagnosed with HSDD (defined as Female Sexual Function Index, or FSFI, score ≤ 26) will discontinue their current AI therapy and will be randomized to treatment with a different AI (non-steroidal AI to steroidal AI, or vice versa) plus bupropion 150 mg orally twice a day versus single-agent AI. All patients diagnosed with HSDD will be referred to counseling services and pelvic floor therapy. In addition, patients will be offered access to the Rosy App. FSFI will be administered at months 1, 3, 6, and during the year 3 visit.

02

Conditions studied

  • Early-stage Breast Cancer
  • Hypoactive Sexual Desire Disorder
  • Hormone Receptor Positive Breast Carcinoma
  • Breast Cancer
03

In context

Breast Neoplasms

12,544 studies on the registry are indexed under Breast Neoplasms; 2,892 are open to participants now.

This study's planned enrollment of 100 is above the median of 72 across 9,303 interventional studies indexed under Breast Neoplasms.

Browse Breast Neoplasms studies →

Lead sponsor

University of Illinois at Chicago is the lead sponsor of 515 studies on the registry; 133 are open to participants now.

Of its 31 completed or terminated interventional studies of FDA-regulated products, 18 (58%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Females 18 or older
  • Histologically-proven, resected, hormone receptor-positive (defined as estrogen receptor ≥1% and/or progesterone receptor (PgR)≥1% by immunohistochemistry at local institutions) early invasive breast cancer, stage I-III per American Joint Committee of Cancer (AJCC) 8th edition, regardless of Human Epidermal growth factor Receptor 2 (HER2) status
  • Completion of the following planned cancer treatments prior to registration:

    • Surgical resection of breast and nodal surgery; (NOTE: Reconstructive surgery does not have to be completed)
    • Adjuvant radiation therapy, if needed
    • Neoadjuvant and/or adjuvant chemotherapy if needed
    • Treatment with anti-HER2 agents is allowed
  • Eastern Cooperative Oncology Group (ECOG) performance status 0, 1, or 2.
  • Ability to swallow oral medication.
  • Provide written informed consent and fill out questionnaires
  • Willing to return to the enrolling institution for follow-up
  • Women of childbearing potential must not be pregnant or breastfeeding. A negative serum or urine pregnancy test is required per institutional practice guidelines. Women of childbearing potential will be required to use effective contraception from the time of consent until 30 days after the last dose of bupropion. Acceptable methods include hormonal contraception, intrauterine device, barrier methods with spermicide, or sterilization

Exclusion criteria

Exclusion Criteria:

  • Previous bilateral oophorectomy or ovarian irradiation; pregnant or lactating at the time of randomization or desiring pregnancy within 5 years.
  • History of psychiatric illnesses on active treatment
  • History or active suicidal thoughts or behaviors
  • Currently taking anti-depressants, anti-anxiety, or anti-psychotic medications. History of seizure disorder
  • History of bulimia or anorexia nervosa
  • Inhibitors or inducers of CYP2B6
  • Drugs metabolized by CYP2D6
  • Use of monoamine oxidase inhibitors (MAOI)
  • History of hypertension, regardless of control status.
  • History of angle closure glaucoma
  • Subjects taking levodopa, amantadine, methylene blue, and linezolid
  • Those with a hypersensitivity to bupropion, anastrozole, letrozole, exemestane, goserelin, or leuprolide. Currently receiving any of the following cancer-directed therapies:

    • Radiation therapy
    • Systemic therapy such as chemotherapy (standard or investigational)
    • Anti-HER2 agents are allowed
05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
100 participants (estimated)

Study arms

  • Active comparator
    Single Agent Aromatase Inhibitor and Gonadotropin-Releasing Hormone (GnRH) Agonist

    Participants will receive aromatase inhibitor as part of standard of care for early stage breast cancer. The duration of AI therapy will be at the discretion of the investigator. Patients who are diagnosed with Hypoactive Sexual Desire Disorder at baseline will discontinue their current aromatase inhibitor treatment and switch to a different aromatase inhibitor treatment (i.e., non-steroidal AI to steroidal AI, or vice versa). Those who are pre-menopausal will also be treated with ovarian suppression therapy (in the form of a GnRH agonist) per standard of care. They will be treated by subcutaneous injection every 28 days and the type, duration, and dose of drug will be per the treating physician's discretion. Those who have ongoing Hypoactive Sexual Desire Disorder symptoms have the option to crossover to the bupropion arm.

    Drug: Aromatase Inhibitors · Drug: GnRH agonist

  • Active comparator
    Single Agent Aromatase Inhibitor

    Participants will receive aromatase inhibitor as part of standard of care for early stage breast cancer. The duration of AI therapy will be at the discretion of the investigator. Patients who are diagnosed with Hypoactive Sexual Desire Disorder at baseline will discontinue their current aromatase inhibitor treatment and switch to a different aromatase inhibitor treatment (i.e., non-steroidal AI to steroidal AI, or vice versa). Those who have ongoing Hypoactive Sexual Desire Disorder symptoms have the option to crossover to the bupropion arm.

    Drug: Aromatase Inhibitors

  • Experimental
    Single Agent Aromatase Inhibitor, Gonadotropin-Releasing Hormone (GnRH) Agonist, and Bupropion

    Participants will receive aromatase inhibitor as part of standard of care for early stage breast cancer plus bupropion 150 mg orally twice daily. The duration of AI therapy will be at the discretion of the investigator. Patients who are diagnosed with Hypoactive Sexual Desire Disorder at baseline will discontinue their current aromatase inhibitor treatment and switch to a different aromatase inhibitor treatment (i.e., non-steroidal AI to steroidal AI, or vice versa). Patients with Hypoactive Sexual Desire Disorder will also have the option to change their dose to 300 mg orally once a day. Those who are pre-menopausal will also be treated with ovarian suppression therapy (in the form of a GnRH agonist) per standard of care. They will be treated by subcutaneous injection every 28 days and the type, duration, and dose of drug will be per the treating physician's discretion.

    Drug: Aromatase Inhibitors · Drug: Bupropion · Drug: GnRH agonist

  • Experimental
    Single Agent Aromatase Inhibitor and Bupropion

    Participants will receive aromatase inhibitor as part of standard of care for early stage breast cancer plus bupropion 150 mg orally twice daily. The duration of AI therapy will be at the discretion of the investigator. Patients who are diagnosed with Hypoactive Sexual Desire Disorder at baseline will discontinue their current aromatase inhibitor treatment and switch to a different aromatase inhibitor treatment (i.e., non-steroidal AI to steroidal AI, or vice versa). Patients with Hypoactive Sexual Desire Disorder will also have the option to change their dose to 300 mg orally once a day.

    Drug: Aromatase Inhibitors · Drug: Bupropion

Interventions

  • DrugAromatase Inhibitors

    An aromatase inhibitor will be given at a duration, frequency, and dose per standard of care.

    Also known as: Letrozole, Anastrozole, Exemestane

  • DrugBupropion

    Bupropion will be taken twice a day by mouth at 150 mg with the option to change to 300 mg daily for those with ongoing HSDD symptoms

    Also known as: Wellbutrin, Zyban

  • DrugGnRH agonist

    A GnRH agonist will be administered for a duration and dose per standard of care as part of ovarian suppression therapy for those who are pre-menopausal. These will be administered subcutaneously every 28 days.

    Also known as: Leuprolide, Goserelin

06

What researchers measure

Primary outcomes

  1. Tolerance of study drugs in patients with early stage breast cancer and Hypoactive Sexual Desire Disorder

    To compare the tolerance of aromatase inhibitor (+/- ovarian suppression therapy) in comparison to aromatase inhibitor (+/- ovarian suppression therapy) plus bupropion. This is assessed by the proportion of patients no longer meeting HSDD criteria as reflected by FSFI \> 26 at three months post-randomization.

    Time frame: Until 3 months post-study enrollment

Secondary outcomes

  1. Disease free-survival in patients with early stage breast cancer and Hypoactive Sexual Desire Disorder

    To compare the disease free survival rate of patients taking aromatase inhibitor (+/- ovarian suppression therapy) to those taking aromatase inhibitor therapy (+/- ovarian suppression therapy) plus bupropion. This is assessed by the time since treatment end to the date of disease progression, death, or least contact, whichever comes first

    Time frame: Until 3 years post-study enrollment

  2. Overall survival in patients with early stage breast cancer and Hypoactive Sexual Desire Disorder

    To compare the overall survival rate of patients taking aromatase inhibitor (+/- ovarian suppression therapy) to those taking aromatase inhibitor therapy (+/- ovarian suppression therapy) plus bupropion. This is defined as the time of treatment randomization to death or last contact in study participants.

    Time frame: Until 3 years post-study enrollment

  3. Safety and tolerability of study drugs in patients with early stage breast cancer and Hypoactive Sexual Desire Disorder

    To determine the safety and tolerability of aromatase inhibitor (+/- ovarian suppression therapy) versus aromatase inhibitor (+/- ovarian suppression therapy) and bupropion as defined by the number of adverse events using NCI Common Terminology Criteria for Adverse Events (CTCAE) version 5.

    Time frame: Until 6 months post-study enrollment

  4. Medication adherence of study drugs in patients with early stage breast cancer and Hypoactive Sexual Desire Disorder

    To determine the rate of medication adherence for patients taking aromatase inhibitor (+/- ovarian suppression therapy) versus aromatase inhibitor (+/- ovarian suppression therapy) and bupropion. This is defined as the number of medication diary entries and physician queries to treatment.

    Time frame: Until 3 years post-treatment start

Other outcomes

  1. Prevalence and response to treatment of Hypoactive Sexual Desire Disorder in patients with early stage breast cancer across different racial groups

    Prevalence of Hypoactive Sexual Desire Disorder among different racial groups will be assessed by the number of of early breast cancer patients with HSDD who are African-American, Caucasian, and Hispanic while the response to treatment across racial groups will be calculated by the overall decrease in FSFI score for the groups.

    Time frame: Until 3 years post-treatment start

07

Study locations

1 site
  • University of Illinois at Chicago
    Chicago, Illinois 60612, United States
    • Oana Danciu, MD · Contact · ocdanciu@uic.edu · (312) 355-1625
    • Michelle Karan · Contact · makaran2@uic.edu · (224) 563-7137
    • Oana Danciu, MD · Principal investigator
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07596212
Lead sponsor
University of Illinois at Chicago
Responsible party
Oana Danciu (Principal Investigator, University of Illinois at Chicago) — Principal investigator
First posted
May 19, 2026
Start date
Sep 2026 (estimated)
Primary completion
Sep 2028 (estimated)
Completion
Sep 2031 (estimated)
Last update
Aug 24, 2026

Study contacts

Oana Danciu, MD
Contact
ocdanciu@uic.edu
(312) 355-1625
Michelle Karan
Contact
makaran2@uic.edu
(224) 563-7137
Oana Danciu, MD
principal investigator · University of Illinois at Chicago

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.

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