Trial Outcomes & Findings for A Trial of the Safety and Immunogenicity of the COVID-19 Vaccine (mRNA-1273) in Participants With Hematologic Malignancies and Various Regimens of Immunosuppression, and in Participants With Solid Tumors on PD1/PDL1 Inhibitor Therapy (NCT NCT04847050)

No participants were enrolled in the following groups: Chronic Lymphocytic Leukemia (CLL) Not on Active Therapy - Booster Phase; Chronic Lymphocytic Leukemia(CLL) Receiving Bruton´s Tyrosine Kinase(BTK) Interruption-Booster Phase; Chimeric Antigen Receptor (CAR) T Cell Therapy - Booster Phase; and Other Adult Solid Tumor - Booster Phase. In the initial phase, 15 participants started \& 4 started in the booster phase = 19 participants enrolled. Participants who crossed over are noted in the table.

A Trial of the Safety and Immunogenicity of the COVID-19 Vaccine (mRNA-1273) in Participants With Hematologic Malignancies and Various Regimens of Immunosuppression, and in Participants With Solid Tumors on PD1/PDL1 Inhibitor Therapy

Solicited (expected) local and systemic Adverse Reactions (ARs) through 7 days after each injection were assessed using the clinical abnormalities section of the Food and Drug Administration (FDA) -Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials. Unsolicited (unexpected) adverse events (AEs) through 28 days after each injection and serious adverse events (SAE's) throughout the entire study period were assessed by the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0. Grade 1 is mild. Grade 2 is moderate. Grade 3 is severe. Grade 4 is life-threatening. Grade 5 is death related to adverse event.

Reactogenicity of mRNA-1273 vaccine was assessed by physical examination findings following vaccination. A physical exam will be performed to assess general physical condition in the following areas: supraclavicular and axillary lymph nodes, cardiovascular, pulmonary, abdomen and skin and include an assessment of pain, tenderness, erythema, induration and warmth at the injection site, fever, chills, arthralgia/joint pain, malaise/fatigue, myalgia/body aches, headache, nausea, vomiting, and abdominal pain following vaccination.

Solicited (expected) local and systemic Adverse Reactions (ARs) through 7 days after each injection were assessed using the clinical abnormalities section of the Food and Drug Administration (FDA) -Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials. Unsolicited (unexpected) adverse events (AEs) through 28 days after each injection and serious adverse events (SAE's) throughout the entire study period were assessed by the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0. Grade 1 is mild. Grade 2 is moderate. Grade 3 is severe. Grade 4 is life-threatening. Grade 5 is death related to adverse event.

Vital signs: weight, temperature, heart rate/pulse, respirations, and blood pressure will be performed prior to each vaccine.

Immunogenicity of mRNA 1273 administered in 2 doses was assessed by titer or level of specific binding antibody (bAb), in participants who have a hematological malignancy and are immunosuppressed due to their disease and/or treatment or receiving a programmed death-1 (PD-1)/programmed death-ligand 1 inhibitor for treatment of a solid tumor - Titer or level of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific binding antibody (bAb) measured by enzyme-linked immunosorbent assay (ELISA) on Day 1, Day 29, Day 36, Day 57, Day 209, and Day 394.

Reactogenicity of mRNA-1273 of a booster vaccination was assessed by physical examination findings following vaccination. A physical exam will be performed to assess general physical condition in the following areas: supraclavicular and axillary lymph nodes, cardiovascular, pulmonary, abdomen and skin and include an assessment of pain, tenderness, erythema, induration and warmth at the injection site, fever, chills, arthralgia/joint pain, malaise/fatigue, myalgia/body aches, headache, nausea, vomiting, and abdominal pain following vaccination.

Number of samples with a neutralizing response (defined as neutralization assay above 30%) will be reported. Immunogenicity of mRNA-1273 vaccine was assessed for Vaccine Naive Arm in participants who have a hematological malignancy and are immunosuppressed due to their disease and/or treatment or receiving a programmed death-1 (PD-1)/programmed death-ligand 1 inhibitor for treatment of a solid tumor. Assessment was performed on Day 1, Day 29, Day 36, Day 57, Day 209, and Day 394

Number of samples with a neutralizing response (defined as neutralization assay above 30%) will be reported. Participants would receive one to two vaccine boosters. Analysis of timepoints after booster 1 and booster 2 are reported collectively. Immunogenicity of mRNA-1273 vaccine was assessed for Booster Arm in participants with hematologic malignancy with or without ongoing immune suppression and participants with solid tumor receiving programmed death-1 (PD-1)/programmed death-ligand 1 inhibitor (PD-L1) inhibitors: Day 1, Day 29, Day 57, Day 180, and Day 360.

Immunogenicity of mRNA 1273 administered in 2 doses was assessed by titer or level of specific binding antibody (bAb), in participants with hematologic malignancy with or without ongoing immune suppression and patients with solid tumor receiving programmed death-1 (PD-1)/programmed death-ligand 1 inhibitor (PD-L1) inhibitors. Titer or level of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific binding antibody (bAb) measured by enzyme-linked immunosorbent assay (ELISA) on Day 1, Day 29, Day 57, Day 180, and Day 360. Participants received one or two vaccine boosters. Analysis of timepoints after booster 1 and booster 2 are reported collectively.

Here is the number of participants with serious and/or non-serious adverse events assessed by the Common Terminology Criteria for Adverse Events (CTCAE v5.0). A non-serious adverse event is any untoward medical occurrence. A serious adverse event is an adverse event or suspected adverse reaction that results in death, a life-threatening adverse drug experience, hospitalization, disruption of the ability to conduct normal life functions, congenital anomaly/birth defect or important medical events that jeopardize the patient or subject and may require medical or surgical intervention to prevent one of the previous outcomes mentioned.