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Received CAR-T cell therapy infusion
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Had 1 or more follow-up provider visits
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Are 18 years of age or older and are a United States citizen
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You did not receive CAR-T treatment as part of a clinical trial
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Diagnosed with amyloid light-chain amyloidosis any time before CAR-T infusion
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Had any invasive malignancy other than multiple myeloma prior to the CAR-T infusion
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Currently in a clinical trial receiving cohort treatment​