Diabetes Mellitus Clinical Trial
Official title:
Evaluation of Metabolic Predictors of Influenza Vaccine Immune Response in the Singapore Elderly Population- the DYNAMIC Trial
The trial aims to evaluate role of metabolic factors including systemic 25-OH D and diabetes in the adaptive immune response (haemagluttination inhibition titer) to influenza vaccine in the elderly. The influenza vaccine administered in this study will be licensed trivalent inactivated influenza vaccine. Elderly who are age above 65 including those with co-morbidities such as diabetes mellitus will be included. The study has its inclusion and exclusion criteria to determine eligibility for participation.
Status | Recruiting |
Enrollment | 240 |
Est. completion date | February 28, 2019 |
Est. primary completion date | December 31, 2018 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 65 Years to 100 Years |
Eligibility |
Inclusion Criteria: - Age 65 and above at time of enrollment (up to age 100) and able to give informed consent - Determined by medical history, physical examination, and clinical judgment to be generally healthy, with no immunosuppressive conditions and having stable current medical conditions. Subjects with preexisting, stable disease, defined as not requiring significant change in therapy or hospitalization for worsening of disease 12 weeks prior to receipt of study vaccine are eligible. A change in dose or therapy within a treatment category (e.g., change from one non-steroidal anti-inflammatory drug to another) is allowed. A change to a new therapy category (e.g., surgery or addition of a new pharmacological class) is only allowed if it is not caused by worsening disease. - Is eligible for seasonal influenza vaccine - Is available for all planned study visits - Is willing to follow study procedures - Able to follow study procedures (questionnaires, blood draws, vaccination) in the opinion of the investigator Exclusion Criteria: - A change to a new therapy category caused by worsening disease is considered significant and will disqualify subject from participating in the study - Subjects reporting any symptoms suggestive of influenza, influenza-like illness, or respiratory illness - Vaccination with any licensed or experimental influenza vaccine within the past 10 months - Intent to receive any other investigational vaccine or agent during the course of the study - Intent to receive other licensed vaccines during the course of the study (does not apply for pandemic or post-exposure prophylaxis scenario - History of severe adverse reaction associated with an influenza vaccine - Allergic to egg proteins (egg or egg products) and chicken proteins - Known or suspected immunodeficiency or receiving treatment with immunosuppressive therapy including cytotoxic agents in past 6 months e.g., transplant recipients on active immunosuppression, patients with cancer, HIV, or autoimmune disease. - Long-term systemic corticosteroid therapy (prednisolone = 7.5mg/day or equivalent for more than 2 consecutive weeks within the past 3 months) Note: If systemic corticosteroids have been administered short term for treatment of an acute illness, subjects will be excluded from the study until corticosteroid therapy had been discontinued for at least 30 days. - History of Guillain-Barré syndrome - Serious chronic medical condition including: metastatic malignancy, severe chronic obstructive pulmonary disease requiring supplemental oxygen, CKD stage 3 and above, end stage renal disease with or without dialysis, clinically unstable cardiac disease, or any other disorder that in the investigator's opinion should preclude the subject from participating in the study - Bariatric surgery, GI malabsorption disorders - Recurrent Falls (=2 falls in the past 12 months) - Osteoporosis with or without pathological fractures - Current or recently completed high dose vitamin D supplementation within the past 3 months (defined as daily cholecalciferol dose of 2000 IU or higher, weekly 50,000 IU or intramuscular calcitriol) - Receipt of any blood products, including immunoglobulin, within six months of study enrollment - Donated blood within last 58 days - Current anticoagulant therapy or a history of bleeding diathesis (including thrombocytopenia with platelet count < 50,000) that would contraindicate intramuscular (IM) injection (Note: antiplatelet drugs such as aspirin and clopidogrel are permitted) - Moderate or severe acute illness/infection (according to investigator judgement) on the day of vaccination, or febrile illness (temperature = 37.5°C). A prospective subject should not be included in the study until the condition has resolved or the febrile event has subsided. - Any medical condition that would, in the opinion of the investigator, interfere with the evaluation of the study objectives |
Country | Name | City | State |
---|---|---|---|
Singapore | Tan Tock Seng Hospital | Singapore |
Lead Sponsor | Collaborator |
---|---|
Tan Tock Seng Hospital | National Healthcare Group, Singapore, Singapore Immunology Network |
Singapore,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Humoral immune response measure | Haemagglutination inhibition (HAI) titer for each of the three influenza vaccine strains in response to influenza vaccine at day 28 compared to baseline (pre-vaccination) titer | Day 0 to Day 28 post vaccination |
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