Single Dose Study to Investigate the Pharmacokinetics (PK) and Safety of Belimumab 200 Milligrams (mg) Intravenous and 200 mg Subcutaneous Via Auto-injector in Chinese Healthy Subjects

Study Overview
=================
Brief Summary
-----------------
This is an open-label, randomized, parallel group, single dose study in healthy Chinese subjects. The purpose of this study is to characterize the pharmacokinetic profile and safety profile of 200 mg single dose of belimumab, administered either intravenously or subcutaneously via auto-injector. Each subject will be randomized in a 1:2 ratio to receive a single dose of either intravenous (IV) or subcutaneous (SC) administration of belimumab 200 mg. The total study duration will be approximately 13 weeks.

Official Title
-----------------
An Open-label, Randomized, Parallel Group, Single Dose Study to Investigate the PK and Safety of Belimumab 200 mg Intravenous and 200 mg Subcutaneous Via Auto-injector in Chinese Healthy Participants

Conditions
-----------------
Systemic Lupus Erythematosus

Intervention / Treatment
-----------------
* Drug: Belimumab for IV
* Drug: Belimumab for SC


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and protocol. Chinese healthy male or female between 18 and 45 years of age inclusive, at the time of signing the informed consent. Healthy as defined as being free from clinically significant illness or disease as determined by a responsible and experienced physician, based on a medical evaluation including medical history, physical examination, vital sign, laboratory tests and ECG. A subject with a clinical abnormality or laboratory parameter(s) which is/are not specifically listed in the inclusion or exclusion criteria, outside the reference range for the population being studied, may be included only if the investigator (in consultation with the GlaxoSmithKline (GSK) medical monitor if necessary) agree and document that the finding is unlikely to introduce additional risk factors and will not interfere with the study procedures. Non-smoker or ex-smoker having ceased smoking for at least 6 months. Body weight >=45.0 kilograms (kg) for females, >=50.0 kg for males, and body mass index (BMI) within the range 19.0<= to <=26.0 kilograms per meter square (kg/m^2). Both male and female subjects are eligible to participate. A female subject is eligible to participate if she is not pregnant, not breastfeeding, and at least one of the following conditions applies: i) Not a woman of childbearing potential (WOCBP) OR ii) A WOCBP who agrees to follow the contraceptive guidance during the treatment period and for at least 16 weeks after the last dose of belimumab. Exclusion Criteria: A positive test for syphilis, positive Hepatitis C antibody, human immune deficiency syndrome (HIV) antigen/antibody, at Screening. For Hepatitis B: subjects with a positive hepatitis B surface antigen (HbsAg) and/or a positive anti-hepatitis B core (HBc) result will be excluded. A positive result of pre-study drug screen (including at minimum: amphetamines, barbiturates, cocaine, opiates, cannabinoids and benzodiazepines). ALT or AST >1.2 times upper limit of normal (ULN). Bilirubin >1.2 times ULN (isolated bilirubin >1.2 times ULN is acceptable if bilirubin is fractionated and direct bilirubin <35%). QTc >450 milliseconds (msec) based on single ECG. The QTc is the QT interval corrected for heart rate according to Bazett's formula (QTcB), Fridericia's formula (QTcF), and/or another method, machine read or manually over-read. Immunoglobulin (M, A, G) level is <Lower limit of normal (LLN) at Screening. Current or chronic history of liver disease or known hepatic or biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones). History of major organ transplant: e.g., heart, lung, kidney, liver, or hematopoietic stem cell transplant. History of malignant neoplasm within the last 5 years, except for adequately treated basal or squamous cell cancers of the skin, or carcinoma in situ of the uterine cervix. Subjects with a sitting position systolic blood pressure <90 millimeters of mercury (mmHg) or >=140 mmHg and/or a sitting diastolic blood pressure <50 mmHg or >=90 mmHg and/or systolic blood pressure drop from supine to standing of >30 mmHg. Symptomatic herpes zoster within 3 months prior to Screening. Evidence of active or latent tuberculosis (TB) as documented by medical history and examination, chest X-rays (posteroanterior) and a positive (not indeterminate) QuantiFERON-TB Gold test. History of any infection requiring hospitalization or treatment with antivirals, antibiotics, anti-fungals, anti-parasitic agents or vaccination within 30 days prior to the administration of study medication. History of regular alcohol consumption exceeding, on an average, 14 drinks/week for men or 7 drinks/week for female (1 drink = 5 ounces [150 mL] of wine or 350 mL of beer or 1.5 ounces [45 mL] of 80 proof distilled spirits) within 6 months of Screening. The subject had participated in a clinical study or post-marketing study with an investigational or a non-investigational product during the previous 4 months or 5 half-lives (whichever is longer) preceding the administration of study medication of this study. Exposure to more than 4 new chemical entities within 12 months prior to the dosing day. The subject planned to concurrently participate in another clinical study or post marketing study. Use of any prescription or non-prescription medications including vitamins, herbal and dietary supplements within the 14 days or 5 half-lives (whichever is longer) prior to the administration of study medication. History of B cell targeted therapy (rituximab, other anti-cluster of differentiation (CD)20 agents, anti-CD22 [epratuzumab], anti-CD52 [alemtuzumab], B lymphocyte stimulator (BlyS)-receptor fusion protein [BR3], Transmembrane activator and calcium-modulator and cytophilin ligand interactor (TACI)-fusion (Fc), LY2127399 [anti-B cell-activating factor receptor (BAFF)] or belimumab) at any time. Have received a live vaccine within 30 days of Day 1 or anticipate receipt of a live vaccine during the study or within 120 days after the last dose administration of study drug. History of sensitivity to any of the study medications, or components thereof or a history of drug or other allergy (excluding pollen allergy) without current symptoms. History of anaphylactic reaction to any food, drug, or insect bite/sting. History of allergic reaction to parenteral administration of contrast agents, foreign proteins, or monoclonal antibodies. Donation of blood or blood products or significant blood loss in excess of 400 mL within 4 months or 200 mL within 2 months prior to administration Subject is mentally or legally incapacitated, or unwillingness or inability (including mentally or legally incapacity) to follow the procedures outlined in the protocol.

Ages Eligible for Study
-----------------
Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Subjects will be randomized in a 1:2 ratio to receive one treatment of either IV or SC administration of belimumab 200 mg.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Belimumab SC<br>Subjects will be administered a single dose of belimumab 200 mg via the SC route. The dose will be administered in the front of the thigh via auto-injector device. | Drug: Belimumab for SC<br>* Belimumab will be available as clear to opalescent, colorless to pale yellow sterile solution at unit dose strength of 200 mg/milliliter (mg/mL) for SC injection in a single-use, prefilled syringe contained within an auto-injector device.<br>|
| Experimental: Belimumab IV<br>Subjects will be administered a single dose of belimumab 200 mg via the IV route administered over approximately 1 hour. | Drug: Belimumab for IV<br>* Belimumab will be available as white to off-white lyophilized cake at a unit dose strength of 400 mg to be reconstituted and diluted in normal saline to obtain 200 mg per dose.<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Serum Concentration of Belimumab Following Intravenous Administration | Blood samples were collected at indicated time points for measurement of serum concentrations of belimumab following intravenous administration. Pharmacokinetic Population comprised of all safety participants (all randomized participants who received at least one dose of study treatment) for whom at least one evaluable pharmacokinetic sample was obtained and analyzed. | Pre-dose (prior to start of belimumab IV infusion), 30 minutes (after the start of infusion), 0 hour (end of infusion); at 1, 6, 24, 48, 72, 96, 168, 336, 504, 672, 1008, 1344 and 1680 hours after end of infusion | 
| Serum Concentration of Belimumab Following Subcutaneous Administration | Blood samples were collected at indicated time points for measurement of serum concentrations of belimumab following subcutaneous administration. | Pre-dose and at 6 hours, 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, 144 hours, 168 hours, 240 hours, 336 hours, 504 hours, 672 hours, 1008 hours, 1344 hours and 1680 hours post-dose | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants With Abnormal Vital Signs | Vital signs were measured in a semi-supine position after five minutes of rest and included tympanic temperature, systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate. The normal ranges were: temperature (35.0-38.0 degrees celsius), SBP (85-160 millimeters of mercury [mmHg]), DBP (45-100 mmHg), heart rate (60-90 beats per minute). Number of participants with abnormality in any vital signs are presented. Safety Population comprised of all randomized participants who received at least one dose of study treatment. | Up to Day 71 | 
| Number of Participants With Abnormal Electrocardiogram (ECG) Findings | Twelve-lead ECGs were recorded with the participants in a semi-supine position, after 5 minutes of rest using an ECG machine. Abnormal findings were categorized as clinically significant and not clinically significant. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Number of participants with clinically significant and not clinically significant abnormal ECG findings have been presented. | Up to Day 71 | 
| Number of Participants With Abnormal Clinical Chemistry Parameters | Blood samples were collected for the assessment of clinical chemistry parameters. The normal ranges were: alanine aminotransferase(7-40 international units per liter[IU/L]), albumin(40-55 grams per liter[g/L]), alkaline phosphatase(35-100 IU/L), amylase(25-125 units per liter), aspartate aminotransferase(13-35 IU/L), bilirubin(Bil.)(3.4-20.5 micromoles per liter [µmol/L]), calcium(2.1-2.55 millimoles per liter[mmol/L]), chloride(99-110 mmol/L), cholesterol(Chol.)(0-5.17 mmol/L), creatine kinase(29-168 IU/L), creatinine(41-73 µmol/L), direct Bil.(0-8.6 µmol/L), gamma glutamyl transferase(7-45 IU/L), glucose(3.9-6.1 mmol/L), high density Chol.(1.04-1.55 mmol/L), low density Chol.(2.59-4.11 mmol/L), lactate dehydrogenase(120-250 IU/L), phosphate(0.74-1.52 mmol/L), potassium(3.5-5.3 mmol/L), protein(65-85 g/L), sodium(137-147 mmol/L), triglycerides(0-1.69 mmol/L), urate(150-350 µmol/L), urea(2.6-7.5 mmol/L). Number of participants with abnormal clinical chemistry parameters are presented. | Up to Day 71 | 
| Number of Participants With Abnormal Hematology Parameters | Blood samples were collected for the assessment of hematology parameters. The normal ranges for the parameters were: basophil count ([0.00-0.06]*10^9 cells per liter [cells/L]), eosinophil count ([0.02-0.52]*10^9 cells/L), erythrocyte count ([3.8-5.1]*10^12 cells/L), hematocrit (0.35-0.45 proportion of red blood cells in blood), hemoglobin (115-150 g/L), leukocyte count ([3.5-9.5]*10^9 cells/L), lymphocyte count ([1.1-3.2]*10^9 cells/L), monocyte count ([0.1-0.6]*10^9 cells/L), neutrophil count ([1.8-6.3]*10^9 cells/L), platelet count ([125-350]*10^9 cells/L). Number of participants with abnormal hematology parameters are presented. | Up to Day 71 | 
| Number of Participants With Abnormal Urinalysis Parameters | Urine samples were analyzed for glucose, ketones, occult blood and protein by dipstick method. The dipstick test results are read as Negative, Trace, 1+, 2+, 3+, 4+ indicating proportional concentrations in the urine sample. Normal range for dipstick test results are 'negative' results. Urine potential of hydrogen (pH) and specific gravity were also analyzed. pH is measured on a numeric scale of 0 to 14; values on the scale refer to the degree of alkalinity or acidity. A pH of 7 is neutral. A pH less than 7 is acidic, and a pH greater than 7 is basic. Urine specific gravity is a measure of the concentration of solutes in the urine and indicated as ratio of urine density to water density. The normal ranges for pH: 4.8 to 7.4; and for specific gravity: 1.003 to 1.03. Number of participants with abnormal results in any urinalysis parameters are presented. | Up to Day 71 | 
| Number of Participants With Injection Site Reaction | Local tolerability as measured by injection site reaction example: induration, erythema, edema, rash, pruritis or pain. Number of participants with any injection site reaction are presented. | Up to Day 71 | 
| Number of Participants With Serious Adverse Events (SAEs) and Non-serious Adverse Events | An adverse event is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. SAE is defined as any untoward medical occurrence that; results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, other situations as judged by physician. Number of participants who had SAEs and non-SAEs are presented. | Up to Day 71 | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Chinese, belimumab, intravenous, subcutaneous, auto-injector