Long term Immunogenicity of Single Dose of Live Attenuated Hepatitis A Vaccine in Indian Children - Results of 15-Year Follow-up.

OBJECTIVES: To measure anti-HAV antibodies 15 years after a single dose of live attenuated hepatitis A vaccine in Indian children. METHODS: Of the 143 children vaccinated in 2004, 109 were evaluated in 2019, clinically and for anti-HAV antibodies. These children have been assessed clinically every year, and for anti-HAV antibodies in 2004, 2007, 2010 and 2014. RESULTS: Of the 109 children who came for the present assessment, 11 had received additional doses of hepatitis A vaccine in 2004/2007 because of low anti-HAV titre (<20 mIU/mL). In the remaining 98 children, 94 (96%) had seroprotective levels with a geometric mean titre of 79.6 mIU/mL. Seroprotection rate in all 109 children was 86.2%. CONCLUSIONS: Single dose of live attenuated hepatitis A vaccine in Indian children demonstrated robust immunogenicity at 15 years post vaccination.

An Industry Perspective on Risks and Mitigation Strategies Associated with Post Conduct Phase of Clinical Trial.

OBJECTIVE: To discuss the potential risks and their mitigation strategies in the post-conduct phase of the trial. BACKGROUND: Risk management is very important for the clinical trial (CT) to ensure that the trial delivers its desired outcome(s) in terms of achieving protocol objective and regulatory compliance. METHODOLOGY: Experienced members of the clinical operation team of a pharmaceutical major underwent a series of sessions to identify risks associated with the post-conduct phase of CT and developed mitigation strategies based on own experiences and guidance documents. The risks were categorized into major, minor and critical risks. RESULTS: In the post-conduct phase of a clinical trial, critical risk identified were; failure to communicate to the stakeholder about premature termination of the trial, mismatch of statistical analysis results and protocol objective/ regulatory requirement, clinical study report (CSR) noncompliant with regulatory requirements or delay in CSR preparation. Safety checks suggested to mitigate these risks including the development of related checklist or shell of relevant documents and its review by clinical development, quality assurance (QA) and regulatory affairs (RA) team prior to finalization. Additionally, six major and five minor risk areas were identified and safety checks were suggested. CONCLUSION: Sponsors must act proactively to ensure a systematic approach to conduct various post conduct trial activities and the plans to mitigate the risks that could affect the quality and outcome of the clinical trial. Future Perspective: A close coordination with all stakeholders for timely anticipation of risks and execution of mitigation strategies are required for successful CT outcomes.

A randomized, open labeled study comparing the serum levels of cobalamin after three doses of 500 mcg vs. a single dose methylcobalamin of 1500 mcg in patients with peripheral neuropathy.

BACKGROUND: Vitamin B12 deficiency has been associated with peripheral neuropathy, loss of sensation in the peripheral nerves, and weakness in the lower extremities. Methylcobalamin is the most effective analogue of vitamin B12 used to treat or prevent the complications associated with vitamin B12 deficiency. The current study aimed to compare the serum cobalamin levels after administration of two different regimes of methylcobalamin in peripheral neuropathy patients. METHODS: The present study was a prospective, randomized, comparative study. The study consisted of two parallel groups, group A (methylcobalamin 500 µg injection intramuscularly three times a week) and group B (methylcobalamin 1500 µg injection intramuscularly once a week). A control group of healthy volunteers was also included. RESULTS: A total of 24 patients (12 in each group) were included in the study. Five healthy volunteers were also included as a control in each group. At the end of treatment, serum cobalamin levels were significantly (P = 0.028) higher in group A (1892.08 ± 234.50) as compared with group B (1438.5 ± 460.32). The serum cobalamin levels in Group A healthy volunteers were also two times higher than that of group B (P = 0.056). Both the LANSS scale and DN4 questionnaire reported similar results at end of treatment. CONCLUSIONS: The 500 µg methylcobalamin thrice weekly regime is more effective in increasing the serum cobalamin levels as compared to the 1500 µg methylcobalamin once weekly regime.

Potential Risks and Mitigation Strategies During the Conduct of a Clinical Trial: An Industry Perspective.

BACKGROUND: Every phase of a clinical trial should be designed in compliance with good clinical practices by following all relevant regulatory guidelines. Patient safety, data integrity and ethics are an integral part of a successful clinical trial which must be considered. Therefore, risk monitoring is an essential tool to identify the risks associated with conduct of any trial. This article is a result of extensive research conducted by a reputed pharmaceutical company to identify the potential stages of risks associated with the conduct phase of trial that could impact the overall quality and safety of a trial. METHODS: The skillful and experienced team members of a reputed pharmaceutical company involved in conducting clinical trials underwent brainstorming sessions to assess and categorize the risks associated with each stage of conduct phase of a clinical trial. They also developed a mitigation plan based on their experiences, best practices and applicable guidance documents. RESULTS: During conduct phase, risks are associated with preparation of site master and trial master file, courier of study supply to site(s) including investigational product prior to site initiation visit, patient recruitment, telephonic monitoring, adverse or serious adverse event monitoring, site monitoring visit(s), collected case report form pages forward to data management vendor, data query clarification and site close-out visit. CONCLUSION: A close working relationship with all the persons associated with the clinical trial, timely monitoring and prospective mitigation planning is required for the conduct of a high quality trial.

Potential Risks and Mitigation Strategies Before the Conduct of a Clinical Trial: An Industry Perspective.

Conduct of clinical trials has undergone substantial changes over the last two decades. Newer markets, evolving guidelines and documentation and high cost involved in conducting the trials have led pharmaceutical companies to prepare a risk mitigation plan. Extensive monitoring of potential risks is an essential element of clinical trials which helps to ensure quality and integrity of a clinical investigation. Every clinical trial has pre (before the trial), conduct and post phase. This article which has been developed as a result of extensive research at ground level by a reputed pharmaceutical company to identify the potential stages of risks that could affect the overall quality and safety of a trial and its outcome during the pre-phase of trial (the stage of the trial where the study design is being planned before initiation of the clinical trial). It includes risks associated with basic study concept, protocol design, Confidential Disclosure Agreement (CDA) and Clinical Trial Authorization (CTA) application signing, vendors of central drug laboratory, site and investigator selection, Clinical Research Coordinator (CRC) meet, Informed Consent Form (ICF), Case Report Form (CRF)/ Status Report Form (SRF) preparation, Ethics Committee (EC) submission, etc. have been highlighted. The risk based mitigation strategy (to develop an effective risk monitoring plan before staring a clinical trial) has also been suggested by authors. A well-tailored and integrated plan, recognition of potential risks and their mitigation strategy can result in the pre exclusion or end to end solution of all the risks associated with pre- phase of clinical trials.

Long-term immunogenicity of single dose of live attenuated hepatitis A vaccine in Indian children.

OBJECTIVES: To assess immunogenicity of a single dose of live attenuated hepatitis A vaccine in Indian children, ten years after immunization. METHODS: Of 143 children vaccinated in 2004, 121 children were evaluated in 2014, clinically and for anti-HAV antibodies. RESULTS: 13 children were early vaccine failures who received two doses of HAV vaccine subsequently. 106 (98%) of 108 remaining children had seroprotective levels with a geometric mean titer of 100.5 mIU/mL. On analysis of all 121 children, the immunogenicity was 87.6%. CONCLUSION: Single dose of live attenuated hepatitis A vaccine provides long-term immunity in Indian children.

Cross-Sectional Study for Prevalence of Non-Steroidal Anti-Inflammatory Drug-Induced Gastrointestinal, Cardiac and Renal Complications in India: Interim Report.

BACKGROUND: Non-steroidal anti-inflammatory drugs (NSAIDs) are the most common therapeutic products used for the management of inflammation and pain. However, their use is associated with gastrointestinal (GI), cardiovascular and renal complications. Although prevalence data regarding NSAID-induced complications are available worldwide, but none of the study has assessed the prevalence of GI, cardiac and renal complications in India. This study aimed to assess the point prevalence of GI, cardiac and renal complications associated with the use of NSAIDs in India. The study also aimed to evaluate the association between the risk factors and GI, renal and cardiac complications in patients using NSAIDs. METHODS: This prospective, cross-sectional, multi-centric study was conducted in eight medical colleges across India (North, East, West, South and Central India). Data related to GI complications including gastric, duodenal and gastroduodenal erosions/ulcers/gastritis, renal complications including acute and chronic renal failure or cardiac complications including acute coronary syndrome (ACS), acute myocardial infarction (AMI) and cardiac failure, were collected from patients. RESULTS: The cut-off date for interim data analysis was July 7, 2014. A total of 2,140 patients out of 3,600 were enrolled from eight centers at the time of interim analysis. The NSAID-associated point prevalence of GI complications was 30.08%; cardiac complication was 42.77%; and renal complication was 27.88%. CONCLUSIONS: Results of the present interim analysis show that the prevalence of GI, cardiac and renal complications among patients is high due to exaggerated usage; however, the final analysis would provide the overall prevalence of these complications.