Transdermal or Oral Telapristone Acetate in Treating Patients Undergoing Mastectomy

Inclusion Criteria:

Women scheduled for unilateral or bilateral mastectomy for breast cancer therapy, pathology confirmed stage 0-II (including ductal carcinoma in situ), or prophylaxis (breast cancer, early onset [BRCA] mutation carriers, women with strong family history or lobular carcinoma in situ or other conditions where prophylactic mastectomy has been elected)
Eastern Cooperative Oncology Group (ECOG) performance status =< 1 (Karnofsky >= 70%)
Total bilirubin < 1.5 x upper limit of normal (ULN)
Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT]) < 2.5 x ULN
Alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) < 2.5 x ULN
Creatinine < 2 x ULN
Alkaline phosphatase < 2.5 x ULN
Blood urea nitrogen < 2 x ULN
Willing to use non-hormonal contraception (adequate barrier-type contraception or intrauterine device [IUD]) from the time the pregnancy test is performed for the duration of study participation, and 30 days after study drug cessation (for women of childbearing potential only)
Ability to understand and the willingness to sign a written informed consent document
Willing and able to schedule mastectomy 4 weeks (+/- 7days) following start of study agent
Willing to avoid exposing breast skin to natural or artificial sunlight (i.e. tanning beds) for the duration of study agent dosing
Negative urine pregnancy test result, for participants of child bearing potential, within 5 days prior to first dose of study medication; female of child-bearing potential is any woman (regardless of sexual orientation, whether she has undergone a tubal ligation, or remains celibate by choice) who meets the following criteria: has not undergone a hysterectomy or bilateral oophorectomy; OR has had a menstrual period at any time in the preceding 12 consecutive months)
Willing to use alcohol in moderation while taking study agent
Willing to refrain from using soy supplements, over the counter estrogen supplements like estroven, Chinese herbs, or other over-the-counter (OTC) herbal products

Exclusion Criteria:

The presence of skin invasion by the breast cancer, or inflammatory changes with skin edema AND erythema
Women with skin diseases (psoriasis, eczema)
A history of thromboembolic disorder or cerebral vascular disease
Use of oral contraceptives or other hormonal treatments within eight weeks prior to the randomization or during the period of the study; women should not have used Depo-Provera in the preceding 6 months; use of hormone coated IUD like Mirena is allowed
Participants may not have received any other investigational agents in the previous 3 months
History of allergic reactions attributed to compounds of similar chemical or biologic composition to telapristone (i.e. other progesterone antagonists)
Taken tamoxifen or other selective estrogen/progesterone receptor modulators (SERMs/SPRMs) within two years prior to entering study or been required to discontinue SERM therapy due to thromboembolic or uterine toxicity
Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
History of prior breast cancer-specific therapy within the previous 2 years; previous unilateral radiation in women scheduled for mastectomy of the contralateral side is allowed
Pregnant or breastfeeding
Currently taking spironolactone
Recent history (within 6 months) of alcoholism or drug abuse
Known active infection with human immunodeficiency virus (HIV), hepatitis A, B, or C