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Rasburicase Use and Glucose-6-Phosphate Dehydrogenase Testing
BACKGROUND/PURPOSE
Tumor lysis syndrome (TLS) occurs when malignant cells rapidly break down. This may lead to hyperuricemia, hyperkalemia, hyperphosphatemia, and/or hypocalcemia. Rasburicase reduces uric acid in cancer patients undergoing anti-cancer therapy. However, caution is required as rasburicase is contraindicated for patients with glucose- 6-phosphate dehydrogenase (G6PD) deficiency due to the increased risk of hemolysis. G6PD deficiency is more prevalent among African Americans (AA), affecting approximately 12% of this population. The FDA recommends testing for G6PD deficiency in higher risk groups before administering rasburicase.
METHODS
A retrospective analysis was conducted at the Louis Stokes Cleveland VAMC from February 1, 2018, to January 31, 2023 addressing appropriate use of rasburicase and incidence of G6PD deficiency and hemolysis. Appropriate use was defined by: TLS (2 or more: uric acid ≥ 8 or 25% increase; K+ ≥ 6.0 or 25% increase; Phos > 4.5mg/dL, or 25% increase; or calcium < 7, or 25% decrease, from baseline) or at high risk for TLS (CLL: venetoclax use w/lymph node > 10cm or WBC > 25k and elevated uric acid; AML: WBC > 100k; ALL: WBC > 100k and LDH 2x ULN; Burkitt lymphoma: LDH 2x ULN).
RESULTS
50 patients were identified who received rasburicase. 21/50 (42%) did not meet criteria for appropriate use. 44/50 (88%) underwent G6PD testing. The average time from G6PD testing order to obtaining the results was 3.4 days; 18/50 patients (36%) had G6PD resulted prior to rasburicase administration, and 26 patients (52%) received rasburicase prior to G6PD results. Overall, 13/50 (26%) were AA. Of the AA pts, 12/13 (92%) were tested for G6PD. Of these 12, 1/12 was found to be G6PD deficient and this patient experienced G6PD deficiency-induced hemolysis after rasburicase. None of the non-AA pts (0/31) tested were found to be G6PD deficient.
IMPLICATIONS
There was a high (42%) level of inappropriate use of rasburicase. G6PD deficiency was uncommon and only found in the AA population. To reduce inappropriate use, rasburicase orders will be restricted to medical oncology. G6PD testing will be limited to AA pts, with pathology to develop a rapid turnaround time for results prior to rasburicase administration to prevent hemolysis.
BACKGROUND/PURPOSE
Tumor lysis syndrome (TLS) occurs when malignant cells rapidly break down. This may lead to hyperuricemia, hyperkalemia, hyperphosphatemia, and/or hypocalcemia. Rasburicase reduces uric acid in cancer patients undergoing anti-cancer therapy. However, caution is required as rasburicase is contraindicated for patients with glucose- 6-phosphate dehydrogenase (G6PD) deficiency due to the increased risk of hemolysis. G6PD deficiency is more prevalent among African Americans (AA), affecting approximately 12% of this population. The FDA recommends testing for G6PD deficiency in higher risk groups before administering rasburicase.
METHODS
A retrospective analysis was conducted at the Louis Stokes Cleveland VAMC from February 1, 2018, to January 31, 2023 addressing appropriate use of rasburicase and incidence of G6PD deficiency and hemolysis. Appropriate use was defined by: TLS (2 or more: uric acid ≥ 8 or 25% increase; K+ ≥ 6.0 or 25% increase; Phos > 4.5mg/dL, or 25% increase; or calcium < 7, or 25% decrease, from baseline) or at high risk for TLS (CLL: venetoclax use w/lymph node > 10cm or WBC > 25k and elevated uric acid; AML: WBC > 100k; ALL: WBC > 100k and LDH 2x ULN; Burkitt lymphoma: LDH 2x ULN).
RESULTS
50 patients were identified who received rasburicase. 21/50 (42%) did not meet criteria for appropriate use. 44/50 (88%) underwent G6PD testing. The average time from G6PD testing order to obtaining the results was 3.4 days; 18/50 patients (36%) had G6PD resulted prior to rasburicase administration, and 26 patients (52%) received rasburicase prior to G6PD results. Overall, 13/50 (26%) were AA. Of the AA pts, 12/13 (92%) were tested for G6PD. Of these 12, 1/12 was found to be G6PD deficient and this patient experienced G6PD deficiency-induced hemolysis after rasburicase. None of the non-AA pts (0/31) tested were found to be G6PD deficient.
IMPLICATIONS
There was a high (42%) level of inappropriate use of rasburicase. G6PD deficiency was uncommon and only found in the AA population. To reduce inappropriate use, rasburicase orders will be restricted to medical oncology. G6PD testing will be limited to AA pts, with pathology to develop a rapid turnaround time for results prior to rasburicase administration to prevent hemolysis.
BACKGROUND/PURPOSE
Tumor lysis syndrome (TLS) occurs when malignant cells rapidly break down. This may lead to hyperuricemia, hyperkalemia, hyperphosphatemia, and/or hypocalcemia. Rasburicase reduces uric acid in cancer patients undergoing anti-cancer therapy. However, caution is required as rasburicase is contraindicated for patients with glucose- 6-phosphate dehydrogenase (G6PD) deficiency due to the increased risk of hemolysis. G6PD deficiency is more prevalent among African Americans (AA), affecting approximately 12% of this population. The FDA recommends testing for G6PD deficiency in higher risk groups before administering rasburicase.
METHODS
A retrospective analysis was conducted at the Louis Stokes Cleveland VAMC from February 1, 2018, to January 31, 2023 addressing appropriate use of rasburicase and incidence of G6PD deficiency and hemolysis. Appropriate use was defined by: TLS (2 or more: uric acid ≥ 8 or 25% increase; K+ ≥ 6.0 or 25% increase; Phos > 4.5mg/dL, or 25% increase; or calcium < 7, or 25% decrease, from baseline) or at high risk for TLS (CLL: venetoclax use w/lymph node > 10cm or WBC > 25k and elevated uric acid; AML: WBC > 100k; ALL: WBC > 100k and LDH 2x ULN; Burkitt lymphoma: LDH 2x ULN).
RESULTS
50 patients were identified who received rasburicase. 21/50 (42%) did not meet criteria for appropriate use. 44/50 (88%) underwent G6PD testing. The average time from G6PD testing order to obtaining the results was 3.4 days; 18/50 patients (36%) had G6PD resulted prior to rasburicase administration, and 26 patients (52%) received rasburicase prior to G6PD results. Overall, 13/50 (26%) were AA. Of the AA pts, 12/13 (92%) were tested for G6PD. Of these 12, 1/12 was found to be G6PD deficient and this patient experienced G6PD deficiency-induced hemolysis after rasburicase. None of the non-AA pts (0/31) tested were found to be G6PD deficient.
IMPLICATIONS
There was a high (42%) level of inappropriate use of rasburicase. G6PD deficiency was uncommon and only found in the AA population. To reduce inappropriate use, rasburicase orders will be restricted to medical oncology. G6PD testing will be limited to AA pts, with pathology to develop a rapid turnaround time for results prior to rasburicase administration to prevent hemolysis.
Improving Ototoxicity Monitoring with Cisplatin Therapy at VA Northeast Ohio Healthcare System (VANOHS), An Interdisciplinary Team Approach
BACKGROUND: Platinum-based chemotherapy is very effective in treating a variety of cancer types however, it has the potential to cause dose limiting ototoxicity that may result in permanent hearing loss. Studies have shown that hearing loss can affect quality of life by interfering with relationships and degrading communication. Early detection of hearing loss assists the oncologist in determining drug dosing and selecting the appropriate treatment regimens. It also allows the audiologist the opportunity for early intervention with rehabilitative measures. At our facility, Veterans starting cisplatin did not consistently have an audiology consult placed or a baseline audiogram completed prior to initiating treatment. A literature review was conducted, and an interdisciplinary team was formed with key stakeholders from medical oncology, audiology, pharmacy, and nursing.
RESULTS: The initial data review from January 1, 2016 to August 8, 2018 (n=85) showed only 17 Veterans (20%) had an audiology consult placed prior to initiating treatment. The target timeframe determined by the audiology department for baseline audiogram completion was eight weeks prior to or up to 24 hours post initial cisplatin administration. Following these guidelines, only seven (8%) of the 17 audiology consults were placed and completed within the recommended timeframe. Our goal was to increase the number of Veterans receiving audiograms prior to cisplatin administration from 8% to 100% by January 1, 2020.
INTERVENTIONS: enhanced provider education for early identification of Veterans starting cisplatin, creation of an email group for increased communication between nursing and audiology, trialing a portable audiometer in the outpatient infusion clinic, and adding a quick order set to the audiology consult on all cisplatin templates. A post-intervention data review from January 1, 2020 to April 30, 2020 (n=17) demonstrated all 17 (100%) Veterans had an audiology consult placed prior to the first dose of cisplatin. The data review also showed that 17 out of 17 Veterans (100%) had an audiogram completed within the target timeframe. This quality improvement project is aimed at maintaining quality of life for our Veterans throughout their cancer journey.
BACKGROUND: Platinum-based chemotherapy is very effective in treating a variety of cancer types however, it has the potential to cause dose limiting ototoxicity that may result in permanent hearing loss. Studies have shown that hearing loss can affect quality of life by interfering with relationships and degrading communication. Early detection of hearing loss assists the oncologist in determining drug dosing and selecting the appropriate treatment regimens. It also allows the audiologist the opportunity for early intervention with rehabilitative measures. At our facility, Veterans starting cisplatin did not consistently have an audiology consult placed or a baseline audiogram completed prior to initiating treatment. A literature review was conducted, and an interdisciplinary team was formed with key stakeholders from medical oncology, audiology, pharmacy, and nursing.
RESULTS: The initial data review from January 1, 2016 to August 8, 2018 (n=85) showed only 17 Veterans (20%) had an audiology consult placed prior to initiating treatment. The target timeframe determined by the audiology department for baseline audiogram completion was eight weeks prior to or up to 24 hours post initial cisplatin administration. Following these guidelines, only seven (8%) of the 17 audiology consults were placed and completed within the recommended timeframe. Our goal was to increase the number of Veterans receiving audiograms prior to cisplatin administration from 8% to 100% by January 1, 2020.
INTERVENTIONS: enhanced provider education for early identification of Veterans starting cisplatin, creation of an email group for increased communication between nursing and audiology, trialing a portable audiometer in the outpatient infusion clinic, and adding a quick order set to the audiology consult on all cisplatin templates. A post-intervention data review from January 1, 2020 to April 30, 2020 (n=17) demonstrated all 17 (100%) Veterans had an audiology consult placed prior to the first dose of cisplatin. The data review also showed that 17 out of 17 Veterans (100%) had an audiogram completed within the target timeframe. This quality improvement project is aimed at maintaining quality of life for our Veterans throughout their cancer journey.
BACKGROUND: Platinum-based chemotherapy is very effective in treating a variety of cancer types however, it has the potential to cause dose limiting ototoxicity that may result in permanent hearing loss. Studies have shown that hearing loss can affect quality of life by interfering with relationships and degrading communication. Early detection of hearing loss assists the oncologist in determining drug dosing and selecting the appropriate treatment regimens. It also allows the audiologist the opportunity for early intervention with rehabilitative measures. At our facility, Veterans starting cisplatin did not consistently have an audiology consult placed or a baseline audiogram completed prior to initiating treatment. A literature review was conducted, and an interdisciplinary team was formed with key stakeholders from medical oncology, audiology, pharmacy, and nursing.
RESULTS: The initial data review from January 1, 2016 to August 8, 2018 (n=85) showed only 17 Veterans (20%) had an audiology consult placed prior to initiating treatment. The target timeframe determined by the audiology department for baseline audiogram completion was eight weeks prior to or up to 24 hours post initial cisplatin administration. Following these guidelines, only seven (8%) of the 17 audiology consults were placed and completed within the recommended timeframe. Our goal was to increase the number of Veterans receiving audiograms prior to cisplatin administration from 8% to 100% by January 1, 2020.
INTERVENTIONS: enhanced provider education for early identification of Veterans starting cisplatin, creation of an email group for increased communication between nursing and audiology, trialing a portable audiometer in the outpatient infusion clinic, and adding a quick order set to the audiology consult on all cisplatin templates. A post-intervention data review from January 1, 2020 to April 30, 2020 (n=17) demonstrated all 17 (100%) Veterans had an audiology consult placed prior to the first dose of cisplatin. The data review also showed that 17 out of 17 Veterans (100%) had an audiogram completed within the target timeframe. This quality improvement project is aimed at maintaining quality of life for our Veterans throughout their cancer journey.