Companion for CAR-T Web App During Chimeric Antigen Receptor T-cell Therapy

Inclusion Criteria:

* Diagnosis of a hematologic malignancy (including any plasma cell dyscrasia, any type of lymphoma, or any type of leukemia).
* Planned receipt of an FDA-approved CAR-T therapy at University of California, San Francisco (UCSF) as standard of care.
* Patient proficiency in spoken and written English.
* Caregiver proficiency in spoken and written English.
* Age \>= 18 years old

Exclusion Criteria:

* FDA-approved CAR-T therapy being administered as part of a prospective industry-sponsored trial, for example registrational trials of CAR-T therapy versus salvage chemotherapy or CAR-T therapy as an off-label line of therapy.

  \*However, patients who receive an FDA-approved CAR-T therapy through an Expanded Access Program for non-conforming products (or any observational, non-interventional analysis of CAR-T products) are eligible.
* Lack of ownership of a personal computing device, tablet device, or smartphone.
* Refusal of patient and/or caregiver to sign up for a UCSF MyChart account.

  \*Participants and caregivers who do not have a MyChart account at enrollment but are willing to create one will receive assistance from the study team to do so.
* Any serious and/or unstable pre-existing medical, psychiatric, or other condition that could - in the opinion of the study's Principal Investigator (PI) - interfere with provision of informed consent or compliance with study procedures.