Are there different kinds of 7+3 and targeted therapies? Can additional drugs be added to 7+3?

Are there different kinds of 7+3 and targeted therapies? Can additional drugs be added to 7+3?
(Guest Lecture): October 2022 - Medicare 101 for Myeloma Patients: What You Need to Know for 2023
(Guest Lecture) November 2022 - Nutrition for Myeloma Patients
(Guest Lecture): September 2022 - A History of Stem Cell Transplantation
(Guest Lecture): September 2022 - Evolution of Myeloma Therapy
Grieving the Life You Thought You'd Live After a Myeloma Diagnosis

Ramantamig Trispecific Antibody in Multiple Myeloma: High Response Rates & Mild CRS | IMS 2026
(Guest Lecture): October 2022 - Finding a Treasure Chest of Assets You Already Own
(Guest Lecture) September 2022 - Improved Fitness = More Options