Phase 2 Study With Minimal Residual Disease (MRD) Driven Adaptive Strategy in Treatment for Newly Diagnosed Multiple Myeloma (MM) With Upfront Daratumumab-based Therapy

INCLUSION

1. Participants ≥18 years of age or legal age of consent per local regulations (whichever is greater).
2. Voluntary written consent must be given before performance of any study-related procedure not part of standard medical care, with the understanding that consent may be withdrawn by the participant at any time without prejudice to future medical care.
3. ECOG status (Appendix A) of ≤2 and able to tolerate all applicable treatments per investigator's evaluation and standard institutional criteria.
4. Both transplant eligible and ineligible myeloma patients can be included in this study. If applicable, participant should be able to tolerate all treatments per investigator's evaluation, including high-dose chemotherapy and autologous stem cell transplant (ASCT) based on standard criteria at the institution where this treatment will be administered.
5. Participant must have a diagnosis of active MM according to International Myeloma Working Group (IMWG) diagnostic criteria.
6. Participant must also have measurable disease per protocol.
7. Baseline bone marrow or tissue sample available for Clonality ID in ClonoSEQ
8. Participant must be registered in and must comply with all requirements of REMSTM program for lenalidomide.
9. Female participant who:

   * Is post-menopausal for at least one year prior to study enrollment, OR
   * Is surgically sterile, OR
   * If of childbearing potential, must have a negative urine or serum pregnancy test within 10-14 days prior to and again within 24 hours of starting lenalidomide. They must also be willing to use TWO effective forms of contraception simultaneously from the time of signing the study consent until 90 days following the administration of the last dose of lenalidomide and 7 months following the administration of the last dose of bortezomib, OR
   * Agree to practice complete abstinence if that is aligned with their lifestyle, which does not include periodic abstinence or withdrawal.
10. Male participant, even if surgically sterilized, must agree to one of the following:

    * Agree to practice effective barrier contraception during the entire study treatment period and through 90 days after the last dose of lenalidomide and 4 months following the administration of the last dose of bortezomib, OR
    * Agree to practice complete abstinence if that is aligned with their lifestyle, which does not include periodic abstinence or withdrawal.

EXCLUSION:

1. Diagnoses of smoldering MM (SMM), monoclonal gammopathy of undetermined significance (MGUS), non-secretory MM, plasma cell leukemia, AL amyloidosis, Waldenstrom's. macroglobulinemia, POEMS syndrome. History of SMM and/or MGUS is not excluded.
2. Known disease involvement of the CNS.
3. History of prior hematopoietic stem cell transplant of any type.
4. Received more than one cycle of anti-myeloma therapy prior to enrollment. Up to one cycle of myeloma therapy is allowed. Concomitant treatment is allowed with low-dose corticosteroids and bisphosphonates. The dose of corticosteroids for myeloma treatment should not exceed the equivalent of 160 mg of dexamethasone over a two-week period before initiation of protocol. Prednisone up to but no more than 10 mg po daily or its equivalent is allowed, for symptom management and comorbid conditions.
5. Significant renal insufficiency, defined as creatinine clearance \<30ml/min per Cockcroft-Gault formula.
6. Hepatic impairment, defined as bilirubin \>1.5 x institutional upper limit of normal (ULN) or AST (SGOT), ALT (SGPT), or alkaline phosphatase \> 3x institutional ULN.
7. Absolute neutrophil count (ANC) \< 1000 cells/mm3 within 14 days of enrollment. Growth factor may not be used to meet ANC eligibility criteria.
8. Hemoglobin (Hgb) \< 8g/dL within 7 days of enrollment.
9. Platelet count \< 75,000 cells/mm3 within 7 days of enrollment. Transfusion may not be used to meet platelet eligibility criteria.
10. Any condition, including laboratory abnormalities, that in the opinion of the investigator places the subject at unacceptable risk if subject were to participate in the study.
11. Major surgery ≤ 2 weeks prior to starting study drug or who have not recovered from complications of the surgery.
12. Clinically significant peripheral neuropathy not well controlled with treatment, defined as symptoms limiting activities of daily living (basic ADLs).
13. Symptomatic uncontrolled cardiac disease including congestive heart failure with New York Heart Association class III-IV symptoms, arrhythmia, unstable angina or myocardial infarction within the past six months, or any other uncontrolled or severe cardiovascular condition.
14. Known chronic obstructive pulmonary disease (COPD) with a forced expiratory volume in 1 second (FEV1) \<50% of predicted normal.
15. Clinically uncontrolled asthma of any classification or known moderate or severe persistent asthma within the past two years (see asthma guidelines. https://www.nhlbi.nih.gov/files/docs/guidelines/asthma\_qrg.pdf).
16. Serious intercurrent illness including but not limited to clinically relevant cerebrovascular disease, uncontrolled diabetes mellitus, cirrhosis, pulmonary disease.
17. Active autoimmune process or other disease requiring systemic immunosuppressive, monoclonal antibody, small molecule, or radiation therapy. However local radiation for myeloma related symptomatic treatment is allowed
18. Participant is:

    * Seropositive for HIV
    * Seropositive for Hepatitis B (defined by a positive test for hepatitis B surface antigen \[HBsAg\]
    * Subjects with resolved infection (i.e., subjects who are HBsAg negative but positive for antibodies to hepatitis B core antigen \[anti-HBc\] and/or antibodies to hepatitis B surface antigen \[anti-HBs\]) must be screened using real-time polymerase chain reaction (PCR) measurement of hepatitis B virus (HBV) DNA levels. Those who are PCR positive will be excluded.
    * Participants with serologic findings suggestive of HBV vaccination (anti-HBs positivity as the only serologic marker) AND a known history of prior HBV vaccination, do not need to be tested for HBV DNA by PCR.
    * Seropositive for Hepatitis C (except in the setting of a sustained virologic response \[SVR\], defined as aviremia at least 12 weeks after completion of antiviral therapy).
19. History of additional active malignancy in the past five years (not including squamous cell or basal cell carcinoma of the skin or in situ cervical cancer). However, malignancy treated with curative intent with \<5% chance of disease relapse / recurrence in the next two years is allowed.
20. Known contraindication to study required medications (including steroids) or appropriate prophylactic medications (e.g. acyclovir, aspirin, warfarin or low-molecular weight heparin).
21. Women with a positive pregnancy test during the screening period prior to study initiation or who are lactating.
22. Participation in other clinical trials, including those with other investigational agents not included in this trial, within 30 days of the start of this trial and throughout the duration of this trial.
23. Any significant history of non-compliance to medical regimens or unwilling or unable to comply with the instructions given.
24. Participants using strong CYP3A4 inducers are excluded unless the inducer can be switched to an alternative agent while receiving Bortezomib (per protocol).