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A FEASIBILITY-STUDY ON IMPLEMENTATION OF THE INTERNATIONAL MYELOMA WORKING GROUP RECCOMENDATIONS FOR MULTIPLE MYELOMA PATIENTS IN ROUTINE CLINICAL PRACTICE: A PERIPHERAL CENTER EXPERIENCE
Author(s): ,
Martina Torchio
Affiliations:
Internal Medicine and Medical Oncology,Ospedale Civile di Vigevano, ASST di Pavia,Vigevano,Italy
,
Carla Cavalli
Affiliations:
Internal Medicine and Medical Oncology,Ospedale Civile di Vigevano, ASST di Pavia,Vigevano,Italy
,
Antonietta Gazo
Affiliations:
Nephrology and Dyalisis, Ospedale Civile di Vigevano, ASST di Pavia,Vigevano,Italy
,
Roberto Bellazzi
Affiliations:
Nephrology and Dyalisis,Ospedale Civile di Vigevano, ASST di Pavia,Vigevano,Italy
Marco Danova
Affiliations:
Internal Medicine and Medical Oncology,Ospedale Civile di Vigevano, ASST di Pavia,Vigevano,Italy
(Abstract release date: 05/18/17) EHA Library. Torchio M. 05/18/17; 182726; PB2012
Martina Torchio
Martina Torchio
Contributions
Abstract

Abstract: PB2012

Type: Publication Only

Background
Renal impairment (RI), defined as serum creatinine above upper normal limit or >2 mg/dl or a estimated glomerular filtration rate (eGFR) <60 ml/min/1,73m2, is one of the most common complications of MM, and it is associated with an increased risk of early death. The incidence of RI at MM diagnosis ranges from 20% to 50%, while its comparison occurred in 60 % MM patients (pts). In this scenario tempestive diagnosis of RI in MM pts and exclusion of possible alternative causes of RI (like amiloydosis, diabetes or MIDD) are essential.

Aims

We applied a diagnostic algorithm obtained from the International Myeloma Working Group Reccomendations in pts admitted to our department for RI (with known and unknown MM, or suspected cast nephropathy, CN), in order to investigate if this diagnostic workflow could positively impact on MM pt management.

Methods

We enrolled adult pts, known or unknown MM, admitted to our hospital for RI or suspected CN, with or withouth monoclonal component. Primarly, we performed complete blood analysis, with eGFR (CKD-EPI and MDRD methods), serum and urine electrolites, bicarbonatemia, serum and urine immunofixation, fraction 3 and 4 of complement, crioglobulinemia, HbA1c, arterial gas analysis, evaluation of urine rate every 6 hours, daily urine collection, urine sediment. We also collected anamnesis on eventual nephrotoxic concomitant therapies like ASA, FANS, clinical parameters and objectives signs of RI (edema, symptomatic disionia). On the second day of hospitalization we requested protein electrophoresis on serum and urine, chest X-ray, ultrasonography of abdomen, ecocardiography and electrocardiography. On the day three we evaluated results of previous exams and we decided, if necessary, eventual biopsieson (bone marrow in suspected unknown MM pts, renal in suspected CN pts, umbilical fat for amyloidosis). All analyses were daily and collegialy discussed between Internists and Nephrologists.

Results
From March to December 2016 we admitted 57 pts with RI and monoclonal component (29 F, 28 M, 41-83 yrs range), 20 are known MM pts and 37 de novo pts. We diagnosed 11 de novo MM, 13 knowed MM with a de novo RI, 12 diabetes related RI, 3 amyloidosis, 16 other causes.

Conclusion
The implementation of the International Myeloma Working Group Reccomendations in a routine clinical practice confirmed its feasibility and utility in the optimal workout of MM pts. We obtained diagnosis of RI within 4 days, both in known and in de novo MM pts, with a positive impact on reduced hospitalization, uncessary dyalisis and steroids overtreatment.

Session topic: 14. Myeloma and other monoclonal gammopathies - Clinical

Keyword(s): Renal impairment, Multiple Myeloma

Abstract: PB2012

Type: Publication Only

Background
Renal impairment (RI), defined as serum creatinine above upper normal limit or >2 mg/dl or a estimated glomerular filtration rate (eGFR) <60 ml/min/1,73m2, is one of the most common complications of MM, and it is associated with an increased risk of early death. The incidence of RI at MM diagnosis ranges from 20% to 50%, while its comparison occurred in 60 % MM patients (pts). In this scenario tempestive diagnosis of RI in MM pts and exclusion of possible alternative causes of RI (like amiloydosis, diabetes or MIDD) are essential.

Aims

We applied a diagnostic algorithm obtained from the International Myeloma Working Group Reccomendations in pts admitted to our department for RI (with known and unknown MM, or suspected cast nephropathy, CN), in order to investigate if this diagnostic workflow could positively impact on MM pt management.

Methods

We enrolled adult pts, known or unknown MM, admitted to our hospital for RI or suspected CN, with or withouth monoclonal component. Primarly, we performed complete blood analysis, with eGFR (CKD-EPI and MDRD methods), serum and urine electrolites, bicarbonatemia, serum and urine immunofixation, fraction 3 and 4 of complement, crioglobulinemia, HbA1c, arterial gas analysis, evaluation of urine rate every 6 hours, daily urine collection, urine sediment. We also collected anamnesis on eventual nephrotoxic concomitant therapies like ASA, FANS, clinical parameters and objectives signs of RI (edema, symptomatic disionia). On the second day of hospitalization we requested protein electrophoresis on serum and urine, chest X-ray, ultrasonography of abdomen, ecocardiography and electrocardiography. On the day three we evaluated results of previous exams and we decided, if necessary, eventual biopsieson (bone marrow in suspected unknown MM pts, renal in suspected CN pts, umbilical fat for amyloidosis). All analyses were daily and collegialy discussed between Internists and Nephrologists.

Results
From March to December 2016 we admitted 57 pts with RI and monoclonal component (29 F, 28 M, 41-83 yrs range), 20 are known MM pts and 37 de novo pts. We diagnosed 11 de novo MM, 13 knowed MM with a de novo RI, 12 diabetes related RI, 3 amyloidosis, 16 other causes.

Conclusion
The implementation of the International Myeloma Working Group Reccomendations in a routine clinical practice confirmed its feasibility and utility in the optimal workout of MM pts. We obtained diagnosis of RI within 4 days, both in known and in de novo MM pts, with a positive impact on reduced hospitalization, uncessary dyalisis and steroids overtreatment.

Session topic: 14. Myeloma and other monoclonal gammopathies - Clinical

Keyword(s): Renal impairment, Multiple Myeloma

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