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 This is an original JCO publication from 2007. Please visit the JCO website to access the full article.


Role of Bisphosphonates in Multiple Myeloma


 

 Authors
Robert A. Kyle, Gary C. Yee, Mark R. Somerfield, Patrick J. Flynn, Susan Halabi, Sundar Jagannath, Robert Z. Orlowski, David G. Roodman, Patricia Twilde, and Kenneth Anderson

This guideline is currently in the process of being updated.

SUMMARY OF RECOMMENDATIONS

TopicRecommendations
Lytic disease on plain radiographs or imaging studiesFor multiple myeloma patients who have, on plain radiograph(s) or imaging studies, lytic destruction of bone or compression fracture of the spine from osteopenia, intravenous pamidronate 90 mg delivered over at least 2 hours or zoledronic acid 4 mg delivered over at least 15 minutes every 3 to 4 weeks is recommended. In light of data from Zervas et al1 showing a 9.5-fold greater risk for the development of osteonecrosis of the jaw with zoledronic acid compared with pamidronate, patients may prefer pamidronate to zoledronic acid until more data become available on this adverse effect of bisphosphonate therapy. Clodronate is an alternative bisphosphonate approved worldwide, except in the United States, for either oral or intravenous administration.
MonitoringAs a result of increased concerns over renal adverse events, new dosing guidelines for patients with pre-existing renal impairment were added to the zoledronic acid package insert. The new guidelines recommend that patients with pre-existing mild-to-moderate renal impairment (estimated creatinine clearance, 30 to 60 mL/min) should receive a reduced dosage of zoledronic acid. No changes in infusion time or interval are required. Zoledronic acid has not been studied in patients with severe renal impairment and is not recommended for use in these patients. Pamidronate 90 mg administered over 4 to 6 hours is recommended for patients with extensive bone disease and existing severe renal impairment (serum creatinine level > 3.0 mg/dL [265 μmol/L] or an estimated creatinine clearance < 30 mL/min). Although no dosing guidelines are available for patients with pre-existing renal impairment, the Update Committee recommends that clinicians consider reducing the initial pamidronate dose in that setting. Infusion times less than 2 hours with pamidronate or less than 15 minutes with zoledronic acid should be avoided. The Update Committee recommends that serum creatinine should be monitored before each dose of pamidronate or zoledronic acid, in accordance with FDA-approved labeling. In patients who develop renal deterioration without apparent cause during bisphosphonate therapy, zoledronic acid or pamidronate should be withheld. Bisphosphonate therapy can be resumed, at the same dosage as that before treatment interruption, when the serum creatinine returns to within 10% of the baseline level. Serum calcium, electrolytes, phosphate, magnesium, and hematocrit/hemoglobin should also be monitored regularly, although there is no evidence on which to base a recommendation for time intervals. The Update Committee also recommends intermittent evaluation (every 3 to 6 months) of all patients receiving pamidronate or zoledronic acid therapy for the presence of albuminuria. In patients experiencing unexplained albuminuria (defined as > 500 mg/24 hours of urinary albumin), discontinuation of the drug is advised until the renal problems are resolved. These patients should be reassessed every 3 to 4 weeks (with a 24-hour urine collection for total protein and urine protein electrophoresis), and pamidronate should be reinstituted over a longer infusion time (≥ 4 hours) and at doses not to exceed 90 mg every 4 weeks when the renal function returns to baseline. The Update Committee supports the use of screening urinalysis for proteinuria but underscores that a 24-hour urine collection for determination of total protein and electrophoresis is required if the test is positive. Although no similar guidelines are available for zoledronic acid, some Update Committee members recommend that zoledronic acid be reinstituted over a longer infusion time (≥ 30 minutes).
Duration of therapyA single randomized clinical trial has shown no benefit of monthly bisphosphonates after a tandem transplantation.2There was no difference in the proportion of skeletal events in the pamidronate-containing regimens (21% and 18%) compared with no maintenance (24%) after 29 months of follow-up. The Update Committee suggests that therapy with bisphosphonates be administered monthly for a period 2 years. (The trial by Attal et al2 suggests 1 year if the patient is in a CR or NCR after a tandem transplantation.) At 2 years, the physician should seriously consider stopping bisphosphonates in patients with responsive or stable disease, but their further use is at the discretion of the treating physician. There are no data to support a more precise recommendation for duration of bisphosphonate therapy in this group of patients. For those patients in whom bisphosphonates were withdrawn after 2 years, the drug should be resumed upon relapse with new-onset skeletal-related events.
Myeloma patients with osteopenia based on normal plain radiograph or bone mineral density measurementsThere is no change from the original guideline recommendation. It is reasonable to start intravenous bisphosphonates in multiple myeloma patients with osteopenia but no radiographic evidence of lytic bone disease. Note, patients with nonlytic lesions have been included in selected trials but have not been the primary focus of the trial or of sufficient number to be separately analyzed.
Patients with solitary plasmacytoma or smoldering or         indolent myeloma without documented lytic bone diseaseThere is no change from the original guideline recommendation. Starting bisphosphonates in patients with solitary plasmacytoma or smoldering (asymptomatic) or indolent myeloma is not recommended.
Patients with monoclonal gammopathy of undetermined significanceThere is no change from the original guideline recommendation. Starting bisphosphonates in patients with monoclonal gammopathy of undetermined significance is not recommended.
Biochemical markersThere is no change from the original guideline recommendation The use of the biochemical markers of bone metabolism to monitor bisphosphonate use is not suggested for routine care
Role in pain control secondary to bony involvementThere is no change from the original guideline recommendation. Intravenous pamidronate or zoledronic acid is recommended for patients with pain as a result of osteolytic disease and as an adjunctive treatment for patients receiving radiation therapy, analgesics, or surgical intervention to stabilize fractures or impending fractures.
Osteonecrosis of the jaw*Osteonecrosis of the jaw is an uncommon but potentially serious complication of intravenous bisphosphonates. The Update Committee agrees with the recommendations described in the revised FDA label for zoledronic acid and pamidronate, Dear Doctor letters, a white paper, and various position papers or statements. All cancer patients should receive a comprehensive dental examination and appropriate preventive dentistry before bisphosphonate therapy. Active oral infections should be treated, and sites at high risk for infection should be eliminated. While on therapy, patients should maintain excellent oral hygiene and avoid invasive dental procedures, if possible.
  • Abbreviations: FDA, Food and Drug Administration; CR, complete response; NCR, near complete response.

  • * This topic is new to the guideline.

 

 

 

 

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