Ceftaroline for Treatment of Hematogenously Acquired Staphylococcus Aureus Osteomyelitis in Children

This is a Phase 1/2, open-label, single-center study to determine safety and tolerability of
Ceftaroline in pediatric subjects 1 to 17 years of age (inclusive) with signs and symptoms of
acute hematogenous osteomyelitis at the end of intravenous therapy. After informed
consent/assent is obtained, Ceftaroline will be administered intravenously. After the subject
has been afebrile for at least 48 hours, has negative blood cultures, is clearly improving in
general, is able to eat and drink, and is able to use or move the involved extremity, the
subject may be switched to oral antibiotic administration.

The duration of subject participation from signing the informed consent form will be up to 14
months [(includes screening period (1 Day), study IV drug administration (approximately 2-14
Days), Standard of Care Oral Drug Administration (4-5 weeks) (the total maximum treatment
period is typically 6 weeks), and a follow-up visit 12 months after the last dose of study
drug)]. Baseline assessments for study eligibility will occur within 24 hours before the
first dose of study drug. A minimum of 2 days (48 hours) of study drug administration is
required.

Some of the tests and procedures completed during this study may be part of regular care for
the subject's condition. Some tests and procedures will be done only for study purposes. Some
regular procedures may also be completed more often as part of the research study.

Study assessments:

1. Past and Current Medical History: A detailed review of the subject's medical history,
including demographics, concomitant medication review, medical/surgical history will be
performed.

2. Vital Signs: Weight, height, blood pressure, pulse rate, and body temperature, will be
recorded.

3. Physical Exam: Physical exam will include, evaluation of subject's overall health,
examination site of infection, and assessment of subject's ability to move affected
limb.

4. Safety Laboratory Assessments: Routine laboratory monitoring including liver function
tests will be done 24 hours prior to enrollment and weekly during Ceftaroline treatment,
and the completion of Ceftaroline treatment and at the follow-up visit. Isolate
susceptibility testing will be done at baseline visit.

5. Pregnancy testing: For females of child-bearing potential, urine pregnancy will be
performed prior to and after completing antibiotic treatment.

6. Pharmacokinetics Assessment: One PK blood sample will be obtained from all subjects who
receive Ceftaroline fosamil.

Inclusion Criteria:

- Informed consent in writing from parent(s) or other legally acceptable
representative(s) and assent from subject (if appropriate according to local
requirements)

- Male or female 1 to 17 years of age, inclusive.

- Suspected hematogenous S.aureus osteomyelitis in a large bone (upper or lower
extremities, pelvis) based on clinical findings and radiology results.

- One to three site(s) of osteomyelitis with expectation that transition to oral
antibiotics from IV therapy will be likely prior to discharge to complete antibiotic
therapy. The second or third site might be contiguous like a proximal tibia and distal
femur but could also be at sites unrelated such as a distal femur and pelvic bone.

- Female subjects who have reached menarche must have a negative urine pregnancy test.

- Female subjects who have reached menarche and are sexually active must be willing to
practice sexual abstinence or dual methods of birth control during treatment and for
at least 28 days after the last dose of any study drug.

- Sufficient IV access to receive medication.

Exclusion Criteria:

- Received more than 24 hours of IV antibiotics prior to enrollment

- More than one bone infected

- Disseminated infection or is admitted to the pediatric intensive care unit

- Underlying condition (excludes mild eczema or reactive airways disease)

- Suspected venous thrombosis or concern for endocarditis

- Requirement for other reasons for another antibiotic potentially active against
organisms commonly causing osteomyelitis in children.

- Creatinine clearance less than 50 mL/min/1.73m2 (calculated by the Schwartz formula)

- Liver transaminases greater than 3 times the upper limit of normal

- Neutropenia (less than 500 neutrophils/mm^3

- Thrombocytopenia (less than 50,000 platelets/mm^3)

- Females who are currently pregnant or breast feeding

- Hypersensitivity reaction to any Beta-lactam antibiotic

- Has had an allergic reaction to ceftaroline in the past