Can a smartphone app ease cancer treatment side effects?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: All Participants * Email address, access to an internet-capable device (smartphone, tablet, or PC), and access to an internet connection Inclusion Criteria: Cohort A * Histologically confirmed diagnosis for mNSCLC, ES-SCLC, or HCC (Child Pugh A) * Systemic therapy naive * Prescribed an atezolizumab IV regimen * Easter Cooperative Oncology Group (ECOG) Performance Status of 0, 1, or 2 Inclusion Criteria: Cohort B * Complete resection of a histologically or cytologically confirmed Stage IIB-IIIB (T3-N2) NSCLC * PD-L1 positive * Have completed adjuvant chemotherapy at least 4 weeks and up to 12 weeks prior to randomization and must be adequately recovered from chemotherapy treatment * ECOG Performance Status of 0 or 1 * Adequate hematologic and end-organ function * For participants receiving therapeutic anticoagulation: stable anticoagulant regimen * Negative for hepatitis B virus (HBV) or hepatitis C virus (HCV) Exclusion Criteria: All Participants * Any physical or cognitive condition that would prevent the participant from using the DHS * Participants not proficient with any of the available DHS language translations or with psychiatric/neurologic disorders or any condition that may impact the participant's ability to use the DPM solution * Currently participating in another interventional trial * History of malignancy within 5 years prior to initiation of study treatment, with the exception of the cancer under investigation in this study and malignancies with a negligible risk of metastasis or death Exclusion Criteria: Cohort A * Concomitant anti-cancer therapy at the time of starting atezolizumab (IV) regimen on the index date which is not part of a locally approved combination therapy with atezolizumab * Participants not receiving atezolizumab, but an atezolizumab biosimilar or non-comparable biologic * Participants currently using another DPM or ePRO solution for symptom management and/or reporting Exclusion Criteria: Cohort B * Participants known to have a sensitizing mutation in the EGFR gene or an ALK fusion oncogene * Uncontrolled tumor-related pain * Uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent drainage procedures (once monthly or more frequently) * History of leptomeningeal disease * Uncontrolled or symptomatic hypercalcemia * Active or history of autoimmune disease or immune deficiency * History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis on screening chest computed tomography (CT) scan * Active tuberculosis * Significant cardiovascular disease * Major surgical procedure, other than for diagnosis, within 4 weeks prior to initiation of study treatment, or anticipation of need for a major surgical procedure during the study * Severe infection within 4 weeks prior to initiation of study treatment, including, but not limited to, hospitalization for complications of infection, bacteremia, or severe pneumonia, or any active infection that could impact participant safety * Treatment with therapeutic oral or IV antibiotics within 2 weeks prior to initiation of study treatment * Prior allogeneic stem cell or solid organ transplantation * Treatment with a live, attenuated vaccine within 4 weeks prior to initiation of study treatment, or anticipation of need for such a vaccine during atezolizumab treatment or within 5 months after the final dose of atezolizumab * Current treatment with anti-viral therapy for HBV * Treatment with investigational therapy within 28 days prior to initiation of study treatment * Prior treatment with CD137 agonists or immune checkpoint blockade therapies, including anti-CTLA-4, anti-PD-1, and anti-PD-L1 therapeutic antibodies * Treatment with systemic immunostimulatory agents (including, but not limited to, interferon and IL-2) within 4 weeks or 5 drug elimination half-lives (whichever is longer) prior to initiation of study treatment * Treatment with systemic immunosuppressive medication (including, but not limited to, corticosteroids, cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-tumor necrosis factor-α \[TNF-α\] agents) within 2 weeks prior to initiation of study treatment, or anticipation of need for systemic immunosuppressive medication during study treatment * History of severe allergic anaphylactic reactions to chimeric or humanized antibodies or fusion proteins * Known hypersensitivity to Chinese hamster ovary cell products or to any component of the atezolizumab formulation * Pregnancy or breastfeeding * Known allergy or hypersensitivity to hyaluronidase, bee or vespid venom, or any other ingredient in the formulation of rHuPH20 * Pathology (e.g., lower extremity edema, cellulitis, lymphatic disorder or prior surgery, preexisting pain syndrome, previous lymph node dissection, etc.) that could interfere with any protocol-specified outcome assessment * Spinal cord compression not definitively treated with surgery and/or radiation, or previously diagnosed and treated spinal cord compression without evidence that disease has been clinically stable for ≥ 2 weeks prior to randomization * Participants currently using another DPM or ePRO solution for symptom management and/or reporting