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Effects of Administration of Fostamatinib on Blood Concentrations of an Oral Contraceptive in Healthy Female Subjects

This study has been completed.
Information provided by (Responsible Party):
AstraZeneca Identifier:
First received: January 12, 2011
Last updated: February 17, 2012
Last verified: February 2012
A crossover study to assess the effect of repeated doses of fostamatinib on the levels of oral contraceptive (Microgynon® 30) in the blood of healthy female subjects. The study will consist of a screening period of up to 35 days, followed by 2 treatment periods (28 days each) of an oral contraceptive (Microgynon® 30) in the absence and presence of fostamatinib. The study will also evaluate the safety and tolerability of fostamatinib in combination with an oral contraceptive

Condition Intervention Phase
Scientific Terminology Rheumatoid Arthritis, Healthy Female Volunteers, Pharmacokinetics, Oral Contraceptive, Drug-drug Interaction Laymen Terminology Level of Oral Contraceptive in Blood, Oral Contraceptive, Rheumatoid Arthritis, Drug -Drug Interaction Drug: fostamatinib Drug: Microgynon® 30 (Oral contraceptive) Drug: Placebo Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Masking: Single (Participant)
Primary Purpose: Basic Science
Official Title: A Single-blind, Placebo-controlled, 2-period, Fixed Sequence Study to Determine the Effects of Coadministration of Fostamatinib 100 mg Twice Daily on the Pharmacokinetics of an Oral Contraceptive in Healthy Female Subjects

Resource links provided by NLM:

Further study details as provided by AstraZeneca:

Primary Outcome Measures:
  • To assess the effects of repeated doses of Fostamatinib on the pharmacokinetics of Microgynon ®30 by assessment of Cssmax and AUCss of ethinyl estradiol (EE), levonorgestrel on Day 21 [ Time Frame: From predose until Day 22 of each Treatment period ]

Secondary Outcome Measures:
  • To characterise the PD of progesterone, LH, FSH, and SHBG, following dosing with monophasic oral contraceptive (Microgynon® 30) alone and following coadministration with fostamatinib [ Time Frame: From predose until Day 22 of each Treatment period ]
    PD = pharmacodynamics, LH = luteinising hormone, FSH = follicle stimulating, SHBG = Sex hormone binding globulin

  • To determine R-406 plasma concentration-time profile and resulting PK parameters including AUCss, Cssmax, and tmaxss [ Time Frame: From pre-dose until 12 hours following final dose on Day 21 ]
  • To determine the safety and tolerability of fostamatinib in combination with an oral contraceptive (Microgynon ®30): adverse event monitoring, vital signs, physical examinations, clinical laboratory tests, ECGs [ Time Frame: Screening, treatment periods 1 and 2, Follow up ]

Enrollment: 22
Study Start Date: March 2011
Study Completion Date: November 2011
Primary Completion Date: November 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: Treatment A
Monophasic oral contraceptive (Microgynon® 30) with placebo tablets
Drug: Microgynon® 30 (Oral contraceptive)
Oral tablets, repeated doses
Drug: Placebo
Oral tablets BID, repeated doses for 21 days
Experimental: Treatment B
Monophasic oral contraceptive (Microgynon® 30) and fostamatinib
Drug: fostamatinib
Oral tablets, repeated doses for 21 days (2 x 50mg BID)
Drug: Microgynon® 30 (Oral contraceptive)
Oral tablets, repeated doses


Ages Eligible for Study:   18 Years to 45 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Female subjects of age 18 to 45 years, inclusive, who are healthy, non-pregnant, not planning pregnancy within the study period
  • Willing to use a highly effective method of birth control, ie, double barrier method contraception (condom and diaphragm with spermicide) from the first day of Period 1 until 28 days after the last dose
  • Body weight of at least 50 kg and body mass index (BMI) between 18 and 30 kg/m2 inclusive
  • Two negative pregnancy tests at least 7 days apart

Exclusion Criteria:

  • History of any clinically significant disease or disorder
  • History or presence of Gastrointestinal, hepatic, or renal disease
  • Any condition listed as a contraindication in the Microgynon® 30 labelling
  • Absolute neutrophil count less than 2.5 x 109/L.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01276262

United Kingdom
Research Site
London, United Kingdom
Sponsors and Collaborators
  More Information

Responsible Party: AstraZeneca Identifier: NCT01276262     History of Changes
Other Study ID Numbers: D4300C00012
Study First Received: January 12, 2011
Last Updated: February 17, 2012

Keywords provided by AstraZeneca:
Phase 1, healthy female volunteers, oral contraceptive, pharmacokinetics, Rheumatoid arthritis, RA, fostamatinib

Additional relevant MeSH terms:
Arthritis, Rheumatoid
Joint Diseases
Musculoskeletal Diseases
Rheumatic Diseases
Connective Tissue Diseases
Autoimmune Diseases
Immune System Diseases
Contraceptive Agents
Ethinyl estradiol, levonorgestrel drug combination
Ethinyl Estradiol-Norgestrel Combination
Contraceptives, Oral
Reproductive Control Agents
Physiological Effects of Drugs
Contraceptive Agents, Female
Contraceptives, Oral, Combined
Contraceptives, Oral, Synthetic
Contraceptives, Postcoital, Synthetic
Contraceptives, Postcoital processed this record on September 19, 2017