The main purpose of the study is to evaluate the safety and tolerability of the combination of elranatamab and carfilzomib and dexamethasone or elranatamab and maplirpacept.

There are 2 parts to this study. Part 1 will evaluate the safety and tolerability of elranatamab when given in combination with carfilzomib plus dexamethasone. Part 2 has 2 arms. The first will evaluate the safety and tolerability of elranatamab when given in combination with maplirpacept. The second will identify the optimal dose(s) of elranatamab plus maplirpacept.

All study medicines are given over 4-week cycles. Everyone taking part in this study will receive elranatamab as a shot under the skin. Participants in Part 1 will also receive weekly carfilzomib as an IV infusion (given directly into a vein) and dexamethasone either by mouth (as a pill) or by IV infusion. Participants in Part 2 will receive elranatamab in combination with maplirpacept as an IV infusion (given directly into a vein)

The investigators will examine the experiences of people receiving the study medicines. This will help determine if the study medicines are safe and can be used for multiple myeloma treatment. Participants will take part in this study for about 2 years after the first dose.

This clinical trial will assess the safety and early efficacy of Hydroxychloroquine or Avelumab, with or without Palbociclib, in early-stage ER+ breast cancer patients who are found to harbor disseminated tumor cells (DTCs) in the bone marrow after definitive surgery and standard adjuvant therapy.

This research study will determine the proportion of patients with lowest minimal residual disease (MRD) response obtainable after receiving 6 cycles of study treatment. Minimal residual disease is multiple myeloma cells below the level of 1 cancer cell out of 100,000 in the bone marrow.

For patients who become MRD "negative" (i.e. less than 1 cancer cell out of 100,000) at the end of 6 cycles of therapy, this study will study if that good response can be maintained with 3 additional cycles of treatment instead of use of autologous hematopoietic cell transplantation (AHCT).

For patients who are MRD "positive" at the end of 6 cycles of therapy, this study will answer whether more patients can become and remain MRD "negative" with AHCT plus teclistamab in combination with daratumumab when compared with patients who undergo AHCT followed by lenalidomide (an established anti-myeloma drug) plus daratumumab.

The purpose of this study is to demonstrate the efficacy of implementing the enhanced recovery after surgery (ERAS) pathway in a prospective manner to patients undergoing surgical treatment for extremity sarcoma.