Intervention: Apremilast
Trial phase: Phase 2
ATC code: L04AA32
SMILES: CCOc1cc([C@@H](CS(C)(=O)=O)N2C(=O)c3cccc(NC(C)=O)c3C2=O)ccc1OC
Sex: Female
Age groups: Adult | Older Adult
Healthy volunteers: No
Participants at risk: 10
Group description: Study drug CC-10004 20mg taken orally twice a day for 12 weeks.
Eligibility criteria:
Inclusion Criteria:

Participant must understand and voluntarily sign and date the appropriate Informed Consent document.
Female who is ≥ 18 years of age and <70 years of age.
Participant must be able to adhere to the study visit schedule and other protocol requirements.
Participant must have vulvodynia--vulvar pain at 2 or more sites tested of at least 3 or greater on a 0-10 Likert scale.
Subject -reported vulvar pain for at least 3 months prior to enrollment.
Participant who is currently taking narcotics for pelvic pain must be on a stable regimen for 3 months prior to enrollment in the study.
Females of childbearing potential (FCBP) must have a negative urine pregnancy test at screening/baseline (Visit 1). In addition, sexually active FCBP must agree to use TWO of the following adequate forms of contraception while on study medication: oral, injectable, or implantable hormonal contraceptives; tubal ligation; intrauterine device; barrier contraceptive with spermicide; or vasectomized partner. A FCBP must agree to have pregnancy tests every 28 days while on study medication.

Subject must meet the following laboratory criteria:

Hemoglobin > 9 g/dL
Hematocrit ≥ 27%
White blood cell (WBC) count ≥ 3000 /mL (≥ 3.0 X 109/L) and < 20,000/mL (< 20 X 109/L)
Neutrophils ≥ 1500 /mL (≥ 1.5 X 109/L)
Platelets ≥ 100,000 /mL (≥ 100 X 109/L)
Serum creatinine ≤ 1.5 mg/dL (≤ 132.6 μmol/L)
Total bilirubin £ 2.0 mg/dL
Aspartate transaminase (AST [serum glutamic oxaloacetic transaminase, SGOT]) and alanine transaminase (ALT [serum glutamate pyruvic transaminase, SGPT]) < 1.5x upper limit of normal (ULN)

Exclusion Criteria:

Pregnant or lactating females
History of any clinically significant cardiac, endocrinologic, pulmonary, neurologic, psychiatric, hepatic, renal, hematologic, immunologic conditions, or other major diseases
Any condition, including the presence of laboratory abnormalities, which places the subject at unacceptable risk if he/she were to participate in the study or confounds the ability to interpret data from the study
History of active Mycobacterium tuberculosis infection (any subspecies) within 3 years prior to the screening visit. Infections that occurred > 3 years prior to entry must have been effectively treated.
Positive TB skin test (Mantoux test)
History of incompletely treated latent Mycobacterium tuberculosis infection as indicated by a positive positive Purified Protein Derivative [PPD] skin test or in vitro test [T-SPOT®. TB, QuantiFERON Gold®] or chest x-ray.
Clinically significant abnormality on the chest x-ray (CXR) at screening.
Use of any investigational medication within 28 days prior to randomization or 5 half-lives if known (whichever is longer)
Any clinically significant abnormality on 12-lead ECG at screening
Positive human immunodeficiency virus (HIV), hepatitis B, or hepatitis C laboratory test result indicating active infection at screening.
History of malignancy within previous 5 years (except for treated basal-cell skin carcinoma(s) and/or fewer than 3 treated squamous-cell skin carcinomas)
History of a vestibulectomy