Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function

Inclusion Criteria: * Subject has a confirmed diagnosis of a primary tumor of one of the following: Breast Cancer, Prostate Cancer, NSCLC, Multiple Myeloma (excluding smoldering/asymptomatic multiple myeloma) and DLBCL or Follicular Lymphoma * Subject is able to read, write, and speak English well enough to understand and complete Informed Consent Form (ICF) and take part in the interview process * Subject has received treatment for their qualifying tumor within the prior 6 months, with the exception of treatment-naïve subjects who have been diagnosed within the past 6 months * Subject is at least 18 years of age * Subject has an estimated life expectancy of 3 months or greater Exclusion Criteria: * Subject has more than one current primary tumor * Subject has a Stage 0 or in situ neoplasm * Subject has known unstable and/or untreated brain metastasis * Subject had major surgery within the last 30 days prior to enrolment that may be associated with changes in physical function. Open biopsy is considered a major surgery * Subject has a current or past history of a personality disorder, bipolar disorder, schizophrenia or other psychotic disorder, obsessive compulsive disorder, cognitive disorder, post-traumatic stress disorder, or other mental deficit * In the opinion of the site investigator or study director, subject has any medical condition or disorder that could compromise his/her ability to give written informed consent and/or prevent or interfere with the Subject's ability to successfully participate in a face-to-face interview and provide meaningful and non-confounded information about their experience with their qualifying tumor