Study to Assess the Safety and Immunogenicity of GlaxoSmithKline (GSK) Biologicals' Herpes Zoster Subunit (HZ/su) Vaccine in Adults Aged 18 Years and Older With Blood Cancers

Vaccine response rate refers to the percentage of subjects with a vaccine response, as determined by Enzyme-Linked Immunosorbent Assay (ELISA). Vaccine response was defined as: For initially seronegative subjects, antibody concentration at Month 2 greater than or equal to (≥) 4 fold the cut-off for Anti-gE [4x97 milli-international units per milliliter (mIU/mL)]. For initially seropositive subjects, antibody concentration at Month 2 ≥ 4 fold the pre-vaccination antibody concentration.

This analysis was performed on subjects with haematologic malignancies excluding subjects with Non-Hodgkin B-cell Lymphoma and Chronic Lymphocytic Leukaemia.

The Adjusted geometric mean concentration was measured in all subjects excluding those with Non-Hodgkin B-cell Lymphoma and Chronic Lymphocytic Leukaemia.

Assessed solicited local symptoms were pain, redness and swelling. Any = occurrence of the symptom regardless of intensity grade. Grade 3 pain = pain that prevented normal activity. Grade 3 redness/swelling = redness/swelling spreading beyond 100 millimeters (mm) of injection site.

Solicited local symptoms: pain, redness, swelling and their number of days were recorded after each vaccination dose.

Assessed solicited general symptoms were fatigue, gastrointestinal symptoms (included nausea, vomiting, diarrhoea and/or abdominal pain), headache, myalgia, shivering and fever [defined as oral, axillary or tympanic route measured temperature equal to or above 37.5 degrees Celsius (°C)]. Any = occurrence of the symptom regardless of intensity grade. Grade 3 symptom = symptom that prevented normal activity. Grade 3 fever = fever > 39.0 °C. Related = symptom assessed by the investigator as related to the vaccination.

Solicited general symptoms: fatigue, gastrointestinal symptoms, headache, myalgia, shivering, temperature and their number of days were recorded after each vaccination dose.

An unsolicited AE covers any untoward medical occurrence in a clinical investigation subject temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product and reported in addition to those solicited during the clinical study. It also included any solicited symptom with onset outside the specified period of follow-up for solicited symptoms. Any was defined as the occurrence of any unsolicited AE regardless of intensity grade or relation to vaccination. Grade 3 AE = an AE which prevented normal, everyday activities. Related = AE assessed by the investigator as related to the vaccination.

A Serious adverse event (SAE) is any untoward medical occurrence that result in death, is life threatening, requires hospitalisation or prolongation of existing hospitalisation, results in disability/incapacity, or is a congenital anomaly/birth defect in the offspring of a study subject. Related = SAEs assessed by the investigator as causally related to the study vaccination

Potential immune-mediated diseases (pIMDs) are a subset of AEs that include autoimmune diseases and other inflammatory and/or neurologic disorders of interest which may or may not have an autoimmune aetiology. Related = pIMds assessed by the investigator as causally related to the study vaccination

Vaccine response rate refers to the percentage of subjects with a vaccine response, as determined by ELISA. Vaccine response was defined as: For initially seronegative subjects, antibody concentration at Month 2 ≥ 4 fold the cut-off for Anti-gE (4x97 mIU/mL). For initially seropositive subjects, antibody concentration at Month 2 ≥ 4 fold the pre -vaccination antibody concentration. This analysis was performed on subjects with haematologic malignancies, excluding subjects with Non-Hodgkin B-cell Lymphoma.

Antibody concentrations were determined by ELISA, presented as geometric mean concentrations (GMCs) and expressed in milli-international units per milliliter (mIU/mL).This parameter was assessed in subjects with haematologic malignancies, excluding subjects with Non-Hodgkin B-cell Lymphoma.

Time to occurrence of any confirmed HZ case is expressed in terms of incidence rate of subjects with at least one event. Hence, person-year rate = number of episodes (n)/ sum of follow-up period (censored at the first occurrence of an event) expressed in years (T[year)]). Follow-up period starts Day 1 of vaccination.

Any clinically suspected case of HZ (defined as (1) a new rash characteristic of HZ (e.g., unilateral, dermatomal and accompanied by pain broadly defined to include allodynia, pruritus or other sensations), or a vesicular rash suggestive of Varicella Zoster Virus (VZV) infection regardless of the distribution, and no alternative diagnosis; or (2) a clinical presentation (symptoms and/or signs) and specific laboratory findings suggestive of VZV infection in the absence of characteristic HZ or VZV rash.) The endpoint is confirmed in two ways: (1) By Polymerase Chain Reaction (PCR) or (2) By the HZ Ascertainment Committee. The PCR is used as primary classification method.

Antibody concentrations were determined by ELISA, presented as geometric mean concentrations (GMCs) and expressed in milli-international units per milliliter (mIU/mL). This parameter was assessed in all vaccinated subjects.

Vaccine response rate refers to the percentage of subjects with a vaccine response, as determined by ELISA. Vaccine response was defined as: For initially seronegative subjects, antibody concentration at Month 2 ≥ 4 fold the cut-off for anti-gE (4x97 mIU/mL). For initially seropositive subjects, antibody concentration at Month 2 ≥ 4 fold the pre -vaccination antibody concentration. Vaccine response was measured in all subjects.

Among markers expressed were interferon-gamma (IFN-γ), interleukin-2 (IL-2), tumour necrosis factor-alpha (TNF-α) and cluster of differentiation 40 ligand (CD40L), as determined by in vitro intracellular cytokine staining (ICS).

Among markers expressed were IFN-γ, IL-2, TNF-α and CD40L, as determined by in vitro ICS. Vaccine response was defined as:

For initially subjects with pre-vaccination T-cell frequencies below the threshold, at least a 2-fold increase as compared to the threshold (2x<320> Events/106 CD4+ T cells).

For initially subjects with pre-vaccination T-cell frequencies above the threshold, at least a 2-fold increase as compared to pre-vaccination T-cell frequencies.

A Serious adverse event (SAE) is any untoward medical occurrence that result in death, is life threatening, requires hospitalisation or prolongation of existing hospitalisation, results in disability/incapacity, or is a congenital anomaly/birth defect in the offspring of a study subject. Related = SAEs assessed by the investigator as causally related to the study vaccination

Potential immune-mediated diseases (pIMDs) are a subset of AEs that include autoimmune diseases and other inflammatory and/or neurologic disorders of interest which may or may not have an autoimmune aetiology

GMCs of anti-gE antibodies were tabulated per study group and HZ confirmed/non-confirmed status and expressed in milli-international units per milliliter (mIU/mL).

MGI was tabulated per study group and HZ confirmed/non-confirmed status. MGI was defined as the Geometric mean of the within subject ratios of the post-vaccination reciprocal anti-gE concentration to the Month 0 reciprocal anti-gE concentration.