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Cancer Care Ontario GCSF Recommendations 2016 Executive Summary The following are recommendations regarding the use of granulocyte colony-stimulating factor (G-CSF) for the primary prophylaxis of febrile neutropenia (FN) in adult patients. Additionally, antibiotic, antifungal, and antiviral prophylaxis will be discussed where applicable. The G-CSF Working Group is comprised of clinicians with expertise in the management of FN in solid and hematologic malignancies from Ontario, Newfoundland and British Columbia. The Group reviewed the current relevant guidelines (ASCO 2006, 2015, NCCN 2012, ESMO 2010, EORTC 2010, Eastern Health 2013), primary literature and consulted clinical disease site group (DSG) oncology experts to make comprehensive recommendations for the use of G-CSF in the primary prophylactic management of FN based on risk classifications (high >20%, moderate = 10-20%, low < 10%). Additionally, an FN risk was determined for all systemic chemotherapy regimens with curative intent (Appendix 2). Regimens with curative intent includes neoadjuvant and adjuvant chemotherapy treatment. This report summarizes the G-CSF recommendations by the Working Group. Supporting literature is presented within the body of this report. Recommendations for primary prophylaxis in adult patients at High Risk (>20%) of FN receiving chemotherapy with curative intent 1. A G-CSF agent should be prescribed for all regimens with a high risk of FN. Filgrastim 300 mcg (if < 90 kg) or 480 mcg (if ≥90 kg or <90kg with an inadequate response to 300 mcg) subcutaneously (rounded to the nearest full vial size) daily for 7 to 10 days starting 24-72 hours post completion of chemotherapy o Interim monitoring of ANC is generally not recommended unless the patient’s ANC is > 10 x 109/L at the subsequent cycle of treatment or if the patient experiences significant bone pain during GCSF treatment. Interim monitoring may be considered for the first cycle at the clinician’s discretion o There is insufficient evidence to recommend the use of filgrastim to elevate neutrophil counts immediately prior to chemotherapy to achieve a minimum ANC. OR Pegfilgrastim 6 mg subcutaneously once to start 24-72 hours post completion of chemotherapy. Not to be given at less than 14 day intervals. If infection develops, antimicrobials may be used concurrently with G-CSF therapy. 2. Where the use of G-CSF is not possible, an antimicrobial agent should be prescribed. Fluoroquinolones are preferred over sulfamethoxazole-trimethroprim (SMX-TMP), except in the case of Pneumocystis Jiroveci pneumonia prophylaxis (PJP) with fludarabine-based regimens. The timing of initiation of an antimicrobial is regimen-depend and should cover the duration of the expected nadir. Levofloxacin 500 mg po daily x 7-10 days OR Ciprofloxacin 500 mg – 750 mg po q12hr x 7-10 days OR Sulfamethoxazole-trimethoprim 160 mg/800 mg po q12h x 7 to 10 days Note: The dose of SMX-TMP for PJP prophylaxis is 80 mg/400 mg po daily or 160 mg/800 mg po q12h three times a week for the duration of fludarabine-based regimens. If an antimicrobial is required, a fluoroquinolone should be used for the prophylaxis of FN in addition to sulfamethoxazole-trimethoprim. 3. The addition of an antifungal should be considered for high-risk hematologic regimens Fluconazole 400 mg po once daily x duration of neutropenia OR Posaconazole loading dose of 300 mg (three 100 mg tablets) twice a day on the first day, then 300 mg (three 100 mg tablets) once a day thereafter OR posaconazole suspension 200 mg po TID x duration of neutropenia (duration of use may vary according to indication) 4. Consider antiviral prophylaxis for regimens containing bortezomib and fludarabine. Acyclovir 400 mg po BID continuously (usually until completion of chemotherapy) Recommendations for primary prophylaxis in patients at Moderate Risk (10% – 20%) of FN 1. If G-CSF is determined to be appropriate based on patient risk assessment (see Table 1), consider recommendations described above for High Risk. 2. If G-CSF is determined to be appropriate based on patient risk assessment but is not possible, consider antimicrobial prophylaxis described above for High Risk. 3. Use of antifungal prophylaxis may be considered during the period of neutropenia. 4. Consider antiviral prophylaxis for regimens containing bortezomib and fludarabine. Acyclovir 400 mg po BID continuously (usually until completion of chemotherapy) Recommendations for primary prophylaxis in patients at Low Risk (<10%) of FN 1. The use of G-CSF products is not recommended in this patient population. 2. Standard use of antibiotics is not recommended in this patient population. 3. Use of antifungal prophylaxis may be considered during the period of neutropenia. 4. Use of antiviral prophylaxis should be based on patient-specific history of herpes simplex viral infections and should be considered if patient is at high risk of a reactivation of latent viral infection during period of neutropenia. Recommendation for secondary prophylaxis of febrile neutropenia If a patient experiences an episode of FN where no G-CSF was used for primary prophylaxis, G-CSF use should be considered if further infections in the next treatment cycle are considered life-threatening; a dose reduction would bring the dose below the studied/effective threshold; or if a lack of protocol adherence compromises the cure rates or disease free or overall survival. A dose reduction may be a reasonable alternative to using G-CSF in secondary prophylaxis if the threshold for efficacy is not reached, or in the case of chemotherapy with a low FN risk. If a patient experiences FN despite receiving primary FN prophylaxis with G-CSF, it is recommended to continue G-CSF use with the following chemotherapy cycles as well as consideration of dose reduction or change in treatment regimen. Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Cancer Care Ontario GCSF Recommendations 2016 Background/Introduction Febrile neutropenia (FN) is a common complication of treatment with myelosuppressive chemotherapy.1 There are a number of clinical implications that impact treatment outcomes for a patient who develops FN including but not limited to: decreased total chemotherapy dose, delayed chemotherapy treatment schedule, hospitalization/prolonged hospitalization and broad-spectrum antimicrobial exposure.1 Risk of FN is stratified according to high (>20%), moderate (10-20%) and low (<10%) risk through consideration of patient, chemotherapy, and cancer related characteristics to determine each patient’s overall risk.1 Treatment with granulocyte colony-stimulating factor (G-CSF) is one way to help prevent a patient’s first FN episode (primary prophylaxis).1 The Cancer Quality Counsel of Ontario (CQCO), an advisor to Cancer care Ontario and the Ministry of Health and Long-Term Care on cancer care in Ontario, assesses many quality indicators including number of unplanned hospital visits, emergency visits and the indications for these visits in Ontarians after receiving adjuvant chemotherapy.2 In 2014, 42% and 45% of patients receiving adjuvant chemotherapy for breast or colon cancer, respectively, had an unplanned visit to the emergency department (ED); 2% of each group being directly admitted to hospital for medical treatment.2 Of the patients presenting to the ED in each of these disease groups, one third of patients were admitted to hospital after physician assessment and about 47% had a second visit to the ED during a course of chemotherapy treatment.2 The most common reasons for hospital visits were neutropenia, fever or infection in breast cancer and colon cancer patients (43% and 23% respectively). In 2012, the American Society of Clinical Oncology (ASCO) released a “Top Five” list of procedures and/or treatments that physicians and patients should question due to their common clinical use despite a lack of support in the current literature.3 Among these five procedures/treatments is the use of G-CSF for the prevention of FN in patients with < 20% risk of this complication.3 G-CSF products are expensive medications and have a number of potentially serious adverse events, including moderate to severe bone pain and has been associated with an increased risk of Acute Myeloid Leukemia/Myelodysplastic Syndrome (AML/MDS), making unnecessary use ill-advised in a person centered care model.1,4 As highlighted by CQCO and ASCO, there is a great need for guidance in the area of appropriate G-CSF use in Ontario, across Canada, and worldwide. This report makes recommendations to improve the rates of G-CSF use in patients at high risk of FN, provides guidance for G-CSF use in patients at moderate risk of FN, and reduces inappropriate G-CSF use in patients at low risk of FN. This report will not discuss: FN risk of stem cell transplant specific chemotherapy, treatment of FN, or extensive review of secondary prophylaxis of FN. Recommendations for the use of antimicrobials, antifungals and antivirals will be outlined where appropriate. Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Recommendations for the Prevention of Febrile Neutropenia in Adult Patients Receiving Chemotherapy with Curative Intent High FN Risk (>20%) 1. A G-CSF agent should be prescribed for all regimens with a high risk of FN. Filgrastim 300 mcg (if < 90 kg) or 480 mcg (if ≥90 kg or <90kg with an inadequate response to 300 mcg) subcutaneously (rounded to the nearest full vial size) daily for 7 to 10 days starting 24-72 hours post completion of chemotherapy o Interim monitoring of ANC is generally not recommended unless the patient’s ANC is > 10 x 109/L at the subsequent cycle of treatment or if the patient experiences significant bone pain during GCSF treatment. Interim monitoring may be considered for the first cycle at the clinician’s discretion o There is insufficient evidence to recommend the use of filgrastim to elevate neutrophil counts immediately prior to chemotherapy to achieve a minimum ANC. OR Pegfilgrastim 6 mg subcutaneously once to start 24-72 hours post completion of chemotherapy. Not to be given at less than 14 day intervals. If infection develops, antimicrobials may be used concurrently with G-CSF therapy. 3. Where the use of G-CSF is not possible, an antimicrobial agent should be prescribed. Fluoroquinolones are preferred over sulfamethoxazole-trimethroprim (SMX-TMP), except in the case of Pneumocystis Jiroveci Pneumonia prophylaxis (PJP) with fludarabine-based regimens. The timing of initiation of an antimicrobial is regimen-depend and should cover the duration of the expected nadir. Levofloxacin 500 mg po daily x 7-10 days OR Ciprofloxacin 500 mg – 750 mg po q12hr x 7-10 days OR sulfamethoxazole-trimethoprim 160 mg/800 mg po q12h x 7 to 10 days Note: The dose of SMX-TMP for PJP prophylaxis is 80 mg/400 mg po daily or 160 mg/800 mg po q12h three times a week for the duration of fludarabine-based regimens. If an antimicrobial is required, a fluoroquinolone should be used for the prophylaxis of FN in addition to sulfamethoxazole-trimethoprim. 4. The addition of an antifungal should be considered for high-risk hematologic regimens Fluconazole 400 mg po once daily x duration of neutropenia OR Posaconazole loading dose of 300 mg (three 100 mg tablets) twice a day on the first day, then 300 mg (three 100 mg tablets) once a day thereafter OR posaconazole suspension 200 mg po TID x duration of neutropenia (duration of use may vary according to indication) 5. Consider antiviral prophylaxis for regimens containing bortezomib and fludarabine. Acyclovir 400 mg po BID continuously (usually until completion of chemotherapy) Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Duration of Filgrastim Use The optimal duration of filgrastim use will likely vary depending on the regimen and patient response. The product monograph recommends administration for 10 – 14 days while clinical practice suggests that 7 to 10 days may be sufficient. A study using American healthcare claims data found that less than 7 days of filgrastim was associated with an increased risk of chemotherapy-induced neutropenic complications versus ≥7 days of treatment.5 A single-centre retrospective Canadian trial of women who received anthracycline- or taxane-containing chemotherapy noted a higher than expected FN incidence of 28% among patients who received primary prophylaxis with filgrastim for a median of 7 days.6 Similarly, 6 days of daily G-CSF as primary prophylaxis did not significantly reduce FN compared with primary antibiotic prophylaxis in a large study of women receiving cycles of doxorubicincyclophosphamide-docetaxel. In contrast, pegfilgrastim use was associated with significantly less FN.7 Therefore the Working Group suggests using filgrastim for at least 7 days. Despite the scarcity of studies comparing 7 to 9 days of filgrastim treatment to ≥10 days, longer treatment courses are uncommon in more recent clinical practice. Among the 5477 patients included in the American healthcare claims data study, 95% of patients received less than 10 days of filgrastim prophylaxis despite the 1011 days of treatment used in the pivotal clinical trials.5 Patients must be evaluated individually to determine if use beyond 10 days is warranted. The 2006 ASCO Guideline recommends continuing G-CSF until the ANC is at least 2 to 3 x 109/L.8 However, in ambulatory practice, it is not common to have patients return for interim blood work unless there is clinical justification for this action. Instead, the G-CSF Working Group does not recommend that interim monitoring of ANC be done unless the patient’s ANC is > 10 x 109/L at the subsequent cycle of treatment or if the patient experiences significant bone pain during G-CSF treatment. Consideration may be made for interim monitoring with the first cycle for patients who may be at higher risk of complications of febrile neutropenia. Docetaxel-Containing Regimens The area of largest disparity between the G-CSF guidelines is the FN risk classification of docetaxel-containing regimens for breast cancer. AC-DOCE+TRAS and FEC-D were rated as having a moderate risk for patients developing FN when treated with these regimens in the NCCN, or NCCN and EORTC, respectively.1,9 There was no classification recommendation provided by ASCO or EORTC for AC-DOCE+TRAS. The NCCN guidelines classify AC-DOCE+TRAS as an intermediate risk regimen based on a trial by Slamon et al., which reported that the rate of FN in patients receiving AC-DOCE+TRAS was 10.9% (n=1068), with AC-DOCE showing similar rates at 9.3% (n=1050).10 This trial allowed the use of G-CSF but did not report the rate of use in each of the groups studied.9 This is a large discrepancy in reporting that needs to be taken into consideration when classifying these regimens. In 2003, Bear et al. reported the risk of FN associated with use of AC-DOCE (without prophylactic use of G-CSF) to be 21.2%; suggesting the regimen to have a high risk of FN.11 The ASCO 2006, EORTC 2010, NCCN 2012 and CCO 2015 recommend AC-DOCE FN classification as high risk.8,9,1 The addition of trastuzumab (TRAS) to AC-DOCE is unlikely to contribute to increased risk of FN. Thus, it is appropriate to extrapolate AC-DOCE literature to AC-DOCE+TRAS in the face of a general lack of data for AC-DOCE+TRAS in chemotherapy naïve patients without the addition of G-CSF with the initial treatment. The similar rate of FN between AC-DOCE and AC-DOCE+TRAS regimens when G-CSF use was allowed by Slamon et al. is support for a Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) similar risk.9 Cancer Care Ontario is extending this recommendation of high FN risk with AC-DOCE to ACDOCE+TRAS based on the above information despite its moderate risk classification from NCCN. FEC-D received a FN risk classification from NCCN of moderate.1 Early literature by Roche and Cousin reported rates of FN with FEC-D usage in breast cancer to be low to moderate.12,13 The rates of G-CSF use in these trials are unclear based on available literature.9,12 A 2011 trial by Madarnas et al. reported the rates of FN in patients receiving FEC-D to be 22.7%, despite use of G-CSF for primary FN prophylaxis in 35% of the included patients.14 This study was not included in any of the above mentioned G-CSF guidelines, likely due to the later completion date of this trial. A retrospective before-and-after study and a meta-analysis both found FN rates with FEC-D treatment to be approximately 30% without the use of G-CSF, providing additional support for the Cancer Care Ontario classification of this regimen as high risk.15,16 Moderate FN Risk (10-20%) 1. For chemotherapy regimens that carry an FN risk between 10 – 20%, the use of G-CSF should be determined at the discretion of the prescriber based on patient risk assessment (see Table 1). If G-CSF is determined to be appropriate, consider recommendations described above for High Risk. If G-CSF is determined to be appropriate based on patient risk assessment but is not possible, consider antimicrobial prophylaxis described above for High Risk. Table 1. Risk Factors for the Development of Febrile Neutropenia1,8,17 Risk Factors High level of supporting evidence Intermediate level of supporting evidence Low level of supporting evidence Other/unclear level of supporting evidence Clinical Factors ≥85% relative intensity Extensive prior chemotherapy Prior radiation to bone marrow Age greater than 65 years Bone marrow involvement with tumor Poor performance status Low albumin/high LDH Pulmonary disease Cardiovascular disease Liver disease Diabetes mellitus Open wounds or active infection Poor nutritional status Hgb < 120 g/L Female sex (smaller BSA) Preexisting neutropenia Advanced cancer Leukemia Lymphoma Lung cancer Decreased immunity Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Age greater than 65 years The NCCN 2014 and EORTC 2010 guidelines recommend that older age is a significant risk factor when determining the risk of FN for patients receiving intermediate risk regimens. There is data for increased FN risk in patients aged ≥ 60 or 65 years in urothelial cancer, Non-Hodgkin’s lymphoma, lung cancer, breast cancer and ovarian cancer. Urothelial Cancer: In the EORTC Cancer in the Elderly Task Force guidelines, prophylactic use of G-CSF was found to reduce the risk of FN and infections in urothelial cancer patients over the age of 60 years, based on metaanalysis of clinical trials.18 Non-Hodgkin’s Lymphoma: The EORTC Elderly Task Force also concluded that there was evidence demonstrating benefit of prophylactic use of G-CSF in NHL patients over the age of 60 years.18 More recently, a prospective multicentered randomized trial found the use of prophylactic G-CSF in NHL patients over the age of 65 years reduced the FN risk to 15% compared to 37% when physician-discretion was used.19 Lung Cancer: Both the EORTC Elderly Task Force and the randomized trial from Balducci and colleagues found evidence in support of the use of prophylactic G-CSF in lung cancer patients older than 60 or 65 years, respectively.18,19 Ovarian Cancer: The prospective study completed by Balducci and colleagues included elderly patients with ovarian cancer and found benefit with the use of prophylactic G-CSF in this patient population.19 A retrospective chart analysis also found that age over 60 years was a predictor of FN.20 Breast Cancer: There is some data pertaining to the use of G-CSF in elderly breast cancer patients. The EORTC Elderly Task Force did not find sufficient data to support primary prophylaxis of FN in elderly breast cancer patients.18 However, the more recent randomized trial from Balducci and colleagues observed a reduction in FN when G-CSF was used.19 A systematic review of four randomized controlled trials of breast cancer patients receiving taxane-containing neoadjuvant or adjuvant chemotherapy observed no difference in FN risk based on age (< 60 years, 60-64 years, or >65 years).21 However, the majority of patients received G-CSF prophylaxis, and patients with comorbidities were excluded. Finally, a sub-analysis of a systematic review found that primary prophylaxis with pegfilgrastim resulted in lower incidence of FN in elderly patients on chemotherapy with a ≥15% risk of FN compared to current practice G-CSF use, where approximately 27% of patients received G-CSF in cycle 1.22 Tools for predicting FN Risk The NCCN 2014 guidelines base their list of risk factors on a risk model developed by Lyman and colleagues. This model incorporates baseline variable information to predict an individual patient’s risk of severe or febrile neutropenia. The model was derived from the first cycle data of 2425 patients and then validated from the data of 1213 patients. It was observed that chemotherapy dose intensity, history of previous chemotherapy, elevated bilirubin and type of cancer were significantly associated with cycle 1 severe or febrile neutropenia. The model had a 90% sensitivity, 59% specificity, 34% positive predictive value, and 96% negative predictive value. The model was undergoing additional validation testing in independent institutions and patient populations at the time of publication.23 Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Low FN Risk (<10%) 1. 2. 3. 4. G-CSF should not be used for primary prophylaxis of FN Standard use of antibiotics is not recommended in this patient population. Use of antifungal prophylaxis may be considered during the period of neutropenia. Use of antiviral prophylaxis should be based on patient specific history of herpes simplex virus and should be considered if patient is at high risk of a reactivation of latent viral infection during period of neutropenia. General Discussions 1. Filgrastim vs pegfilgrastim A number of studies have compared filgrastim and pegfilgrastim. Shi et al. found that there was no significant difference in rates of grade 4 neutropenia, incidence of FN or antibiotic administration rates. The absolute neutrophil count (ANC) nadir was earlier (7 vs 9 days) and duration of neutropenia was shorter with pegfilgrastim vs filgrastim but the depth of the nadir was not significantly different between treatments.24 In another comparative study, patients receiving pegfilgrastim 100 ug/kg vs filgrastim 5 ug/kg/day as primary prophylaxis after treatment with doxorubicin and docetaxel were reported to have similar rates of cycle-one grade-four neutropenia (74% vs 76%), duration of neutropenia (1.3 days vs 1.6 days), FN (7% vs 4%), and mild-moderate bone pain (35% vs 36%).25 Pegfilgrastim 30 ug/kg and 60 ug/kg were also evaluated in this study but were not as effective as either the pegfilgrastim 100 ug/kg or filgrastim treatments in preventing grade-four neutropenia or FN episodes.16 There was large variation in the sample size (25;19;60;46 for filgrastim; pegfilgrastim 30 ug/kg; pegfilgrastim 60 ug/kg; pegfilgrastim 100ug/kg respectively) of the treatment groups of this study so significance of these results needs to be interpreted with extreme caution.17 There is some evidence that pegfilgrastim may be more effective than filgrastim. Weycker et al. identified a difference between the two agents, observing a lower risk of hospitalization for neutropenic complications during cancer chemotherapy with pegfilgrastim compared to filgrastim.26 A number of meta-analyses have suggested that pegfilgrastim may be superior to filgrastim in reducing FN rates with similar incidence of bone pain.27,28 A number of cost-effectiveness assessments have been done comparing filgrastim and pegfilgrastim in the current model of practice. A Canadian cost-effectiveness assessment found that neither of these medications is costeffective with the current funding and usage practices, with cost estimates of CAD$1740/10 day course of filgrastim, CAD$2422/pegfilgrastim 6 mg dose, CAD$1012/day of hospitalization for FN (2012 costs).29 At this time, cost-benefit is being analyzed in quality-adjusted life years instead of survival as a clear survival benefit has not been seen with these medications.24 If a survival benefit is identified, or medication coverage is made available for appropriate patient groups, these medications may prove to be cost-effective from a health systems perspective, without adversely effecting clinical outcomes.24 This analysis highlights the importance of eliminating inappropriate use of G-CSF prophylaxis in low FN risk patients and selective use in moderate risk FN patients. At this time there have not been any cost-effectiveness analyses conducted in only high FN risk patients but it is likely that use in this patient population would prove to be cost effective. Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Despite the meta-analyses suggesting decreased FN risk with pegfilgrastim, the G-CSF Working Group does not advocate for one G-CSF product over another. The decision of product selection will need to incorporate patient preference, access and convenience. Cost4,26 $192/filgrastim 300 mcg dose (DIN 01968017) $308/filgrastim 480 mcg dose (DIN 09853464) $2422/pegfilgrastim 6 mg dose (DIN 02249790) The Ontario Drug Benefit Program (ODB) funds both strengths of filgrastim under Limited Use criteria for prophylaxis of FN in patients receiving chemotherapy with curative intent. It does not currently fund pegfilgrastim. o Primary G-CSF prophylaxis: Patients with cancer receiving a curative chemotherapy who are expected to have incidence of FN of more than or equal to 20% (e.g., due to highly myelosuppressive regimen, patient co-morbidities, pre-existing severe neutropenia, etc.). o Secondary G-CSF prophylaxis: For secondary prophylaxis of FN (i.e. patient has experienced an episode of sepsis or FN or neutropenia such that treatment has had to be delayed for at least one week) for patients with cancer receiving a curative chemotherapy o Exclusion: non-curative cancer with palliative intent. o Dosage reduction: <90kg: 300mcg, ≥90kg or patient who was unable to achieve adequate response from 300mcg: 480mcg. 2. Curative Intent vs Palliative Chemotherapy The goal of curative chemotherapy treatment is to induce remission or cure of the cancer, prolonging the patient’s life. In cases where reduced dose density or intensity has been shown to lead to poor prognosis, the use of G-CSF is justified with the goal of preventing or reducing the need for these dose changes.11 The need for dose changes may be prevented with G-CSF use through its ability to decrease the duration, severity and complications of neutropenia experienced by the patient.11 The goal of palliative chemotherapy treatment is to extend and improve the patient’s quality of life as much as possible and not to necessarily cure the disease. In this case, increased intensity or density of chemotherapy regimens has not been proven to lead to improved quality of life for these patients.8 In this setting, a decrease in dose density or intensity of chemotherapy to decrease the duration, severity and risk of complications of neutropenia is preferred over accomplishing these outcomes with the use of G-CSF products.8 G-CSF is not recommended for prevention of grade four neutropenia or FN when the goal of chemotherapy is palliative unless dose density or intensity are unable to be decreased. If these measures are not effective in preventing grade four neutropenia or FN, consideration should be given to secondary FN prophylaxis with antibiotic therapy. 3. Secondary FN Prophylaxis Secondary FN prophylaxis is treatment to help prevent a future episode of FN after an initial FN episode has already been experienced by that patient.11 The occurrence of a previous FN episode predisposes a patient to further episodes of FN.11 If a patient experiences an episode of FN where no G-CSF was used for primary Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) prophylaxis, G-CSF use should be considered in secondary prophylaxis of FN if further infections in the next treatment cycle are considered life-threatening; a dose reduction would bring the dose below the studied/effective threshold; FN may lead to a delay in chemotherapy; or if a lack of protocol adherence compromises the cure rates or disease free or overall survival.1,30 A dose reduction may be a reasonable alternative to using G-CSF in secondary prophylaxis if the threshold for efficacy is not reached, or in the case of chemotherapy with a low FN risk. The ASCO 2015 guidelines report that there is no data to support improvements in disease-free or overall survival for common cancers with the use of G-CSFs to maintain dose-intensity instead of dose reduction.31 If a patient experiences FN despite receiving primary FN prophylaxis with G-CSF, it is recommended to continue GCSF use with the following chemotherapy cycles as well as consideration of dose reduction or change in treatment regimen.1 4. Risk of neutropenic infection by hematological vs solid malignancy The mechanism of infection and infection risk in hematological malignancies is fundamentally different than with solid tumour malignancies. Patients with hematological malignancies are at increased risk for infection due to leukopenia secondary to infiltration of the marrow with malignant cells, potential for hypogammaglobulinemia, restriction of antibody production, and common use of multiple treatment cycles.32 Patients with solid tumours are at increased infection risk due to potential anatomical abnormalities caused by the tumour itself, necrotized tumours acting as a nidus of infection, tumours impairing the body’s natural defenses (i.e. postobstructive pneumonias in endotracheal tumours, facilitated bacterial gut translocation with GI mucosal tumours, etc), and surgical removal of tumours in immune compromised or non-immune compromised patients.30 Both hematological and solid tumours carry their own individual risk factors for infection as described above. This highlights the importance of taking malignancy type and characteristics into consideration, in addition to the FN risk classification of the chemotherapy regiment to be given, when determining the patient’s overall risk for FN. This is especially important in patients scheduled to receive moderate FN risk chemotherapy treatment. 5. Efficacy of G-CSF vs antimicrobial for FN primary prophylaxis. There is a large composite of data available to assess the efficacy of G-CSF and antibiotics monotherapy in preventing FN episodes. Takabatake et al. prospectively assessed docetaxel 75 mg/m2 + cyclophosphamide 600 mg/m2 every three weeks for the treatment of breast cancer, using no primary prophylactic G-CSF or antibiotics for the prevention of FN.33 An FN event rate of 28%, all events being grade 3 in severity, was reported.32 Ngamphaiboon et al. looked at the same regimen with 100% use of primary prophylactic G-CSF, with no primary prophylactic antibiotic use, and saw an FN event rate of 7%.34 Indirectly comparing the safety results of these two studies, there was an absolute risk reduction (ARR) of 21% in FN episodes when G-CSF is used as primary prophylaxis. These results were echoed in the before-and-after retrospective study by Mullard et al. study using FEC-D, which saw an FN event rate pre-G-CSF (without antibiotic use) of 30% and FN event rates post-G-CSF (without antibiotic use) of 11%, an ARR of 19%.15 The question of whether to choose antibiotic(s) or G-CSF to prevent infection or FN in oncology patients receiving chemotherapy was addressed by a 2009 Cochrane Systematic Review that concluded there is insufficient evidence Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) to support the use of either antibiotics or G-CSF over the other for the prevention of fever or hospitalization for FN.35 Due to FN and other infectious complications associated mortality rates of 2-21%,34 patients at high risk of FN should receive both antibiotics and G-CSF for prevention as the combination has been seen to be better than either treatment alone.7,36 Caution should be used when prescribing an antibiotic for prophylactic use since the development of resistance is increasing, putting patients at risk of subsequent infections with antibiotic-resistant organisms.37 Patients at moderate risk of FN should receive patient specific assessment to determine the appropriateness of antibiotic and/or G-CSF FN prophylaxis based on the characteristics described in Table 1. The G-CSF Working Group recommends the use of G-CSF where possible due to concerns over antibiotic overuse. When an antibiotic is necessary, the use of a fluoroquinolone is preferred over sulfamethoxazole-trimethoprim due to the hematologic toxicities associated with sulfonamides (e.g. agranulocytosis). Process for Assigning FN Risk to Chemotherapy Regimens with Curative Intent Table 2 summarizes the FN risk assigned to each chemotherapy regimen with curative intent by the GCSF Working Group. These include neoadjuvant and adjuvant regimens that are part of the Systemic Treatment Funding Model. The process for arriving at the FN risk was a combined effort of published literature and expert clinical consensus of the Disease Site Leads or their delegates. The GCSF Working Group proposed FN risk classifications to those regimens where a classification was available by international guidelines (e.g. ASCO, NCCN, EORTC) or in clinical trials where the study was accessible by the Group. The list of disease-site-specific regimens were then vetted through to the Disease Site Leads or Clinical Leads for verification and for additional classification of regimens based on clinical experience and best practice. Consensus was achieved between Disease Site Leads where there were multiple clinicians assigning FN risk classification to each regimen. Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Table 1: GCSF Recommendations for the Prophylaxis of Febrile Neutropenia High Risk (Risk of FN > 20%) A G-CSF agent should be prescribed for all regimens with a high risk of FN. Filgrastim 300 mcg (if < 90 kg) or 480 mcg (if ≥90 kg or <90kg with an inadequate response to 300 mcg) subcutaneously (rounded to the nearest full vial size) daily for 7 to 10 days starting 2472 hours post completion of chemotherapy OR Pegfilgrastim 6 mg subcutaneously once to start 24-72 hours post completion of chemotherapy cycle. Not to be given less than 14-day intervals. Where the use of G-CSF is not possible, an antimicrobial agent should be prescribed. Ciprofloxacin 500 mg – 750 mg oral q 12 hr x 7-10 days OR Levofloxacin 500 mg oral daily x 7-10 days. The addition of an antifungal should be considered for high-risk hematologic regimens Fluconazole 400 mg po once daily x duration of neutropenia OR Posaconazole 300 mg po BID (3 x 100 mg tablets) on Day 1 then 300 mg po daily thereafter OR posaconazole suspension 200 mg po TID OR x duration of neutropenia. Consider antiviral prophylaxis based on patient history for the duration of neutropenia and for regimens containing bortezomib and fludarabine. Acyclovir 400 mg po BID continuously (usually until completion of chemotherapy). Moderate Risk: Additional Risk Factors Risk Factors Clinical Factors High level of supporting evidence -≥85% relative intensity. -Extensive prior chemotherapy. -Prior radiation to bone marrow. -Age greater than 65 years. -Bone marrow involvement with tumor. Intermediate -Poor performance status. -Low albumin/high LDH. level of -Pulmonary disease. supporting -Cardiovascular disease. evidence -Liver disease. -Diabetes mellitus. Low level of -Open wounds or active infection. supporting -Poor nutritional status. evidence -Hgb < 120 g/L. -Female sex (smaller BSA). Other/unclear -Preexisting neutropenia. -Advanced cancer. level of -Leukemia. supporting -Lymphoma. evidence -Lung cancer. -Immunocompromised. Moderate Risk (Risk of FN 10-20%) Consider treatment based on risk factors listed in “Additional risk factors column” Consider filgrastim OR pegfilgrastim dosed as above. Consider ciprofloxacin OR levofloxacin dosed as above. Consider fluconazole OR posaconazole dosed as above. Consider antiviral therapy based on patient specific history of viral infections/chemotherapy regimen. Low FN Risk (Risk of FN < 10%) Filgrastim OR pegfilgrastim are not recommended in this patient population. Antibiotic prophylaxis is not standard recommendation in this patient population. Antifungal prophylaxis is not standard recommendation in this patient population. Consider antiviral therapy as needed. Note: Interim monitoring of ANC is generally not recommended unless the patient’s ANC is > 10 x 109/L at the subsequent cycle of treatment or if the patient experiences significant bone pain during GCSF treatment Table 2: Febrile Neutropenia Risk Classification of CCO Drug Formulary Regimens with Curative Intent Disease Site Group Breast Central Nervous System Gastrointestinal Regimen AC AC-DOCE AC-DOCE+TRAS AC-PACL AC-PACL(DD) AC-PACL(DD)+TRAS AC-PACL(W) AC-PACL(W)+TRAS AC-PACL+TRAS CRBPDOCETRAS CYCLDOCE CYCLDOCE+TRAS FEC100 FEC-D FEC-D+TRAS TRAS PCV CAPE CAPE(RT) CAPECISP CAPECISP(RT) CISPETOP(3D) CISPFU CISPFU(RT) CISPGEMC CRBPETOP CRBPFU CRBPPACL(RT) ECARBOF ECARBOX ECF ECX FLOX FU(CIV-RT) FU(IV-CIV)LCVR FULCVR FULCVR(RT) FULCVR(RT-GAST) FULCVR(W) FUMTMC(RT) GEMC CCO Risk Classification Low High High Low High High Low Low Low High High High Moderate High High Low Low Low Low Moderate Moderate Moderate Moderate Moderate Moderate Low Low Low Low Low Moderate Moderate Moderate Low Low Low Low Low Low Low Low Gastrointestinal (cont.) IMAT Low MFOLFOX6 Low OXALRALT Low RALT Low XELOX Low CAPEMTMC(RT) Moderate FU(IV-CIV)LCVR (MODIFIED DE GRAMONT) Low FU(IV-CIV)LCVR( DE GRAMONT) Low Genitourinary BEP(3D) High BEP(5D) High CISP Low CISP(RT) Low CISP(RT-W) Low CISPETOP(3D) Moderate CISPETOP(5D) Moderate CISPFU Moderate CISPGEMC Moderate CISPGEMCPACL Moderate CMV Moderate CRBP Low CRBP(RT) Low CRBPETOP Moderate CRBPGEMC Moderate FUMTMC(RT) Low MTTN Low MVAC High MVAC(HD) High TIP High VEIP High VIP High Gynecological BEP(5D) High CISP Low CISP(RT-W) Low CISPDOXO Moderate CISPETOP(3D) Moderate CISPETOP(5D) Moderate CISPFU Moderate CISPPACL Low CISPPACL(IP) Low CRBP Low CRBP(RT) Low CRBPDOCE Moderate CRBPDOXO Low Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) CRBPETOP CRBPPACL CRBPPACL(IP) CRBPPACL(W) FUMTMC(RT) Gynecological (cont.) Head and Neck Hematological DCTN EMA-CO EP-EMA ETOPPAC-CISPPACL MTRX MTRX(5D) CETU(RT) CISP(RT) CISP(RT-D) CISP(RT-W) CISPDOCEFU CISPETOP(3D) CISPFU CISPFU(RT) CRBP(RT) CRBPETOP CRBPFU(RT) ABVD BEACOPP CEPIOP CEPIOP+RITU CEPP CEPP+RITU CHOP CHOP+R CHOP14+R CNOP COPP CYCLETOP DHAP EPOCH+RITU DA-EPOCH+RITU ESHAP GDP GDP+RITU ICE MINIBEAM Moderate Low Low Low Low Low High High Low Low Low Low Low Low Low High Moderate Moderate Moderate Low Moderate Low Moderate High Moderate Moderate Moderate Moderate Moderate Moderate High Moderate Low Low High High High High Moderate Moderate High High Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Hematological (Cont.) CEOP CEPIOP CEPIOP+RITU CEPP+RITU CHOEP CHOEP+RITU ICE HYPERCVA HYPERCVAD+RITU Lung Sarcoma CISP(RT-D) CISPETOP(3D) CISPETOP(RT) CISPETOP(PO) CISPGEMC CISPPEME CISPVINO CISPVINO(MOD) CISPVINO(RT) CISPVINO(W) CISPVNBL CISPVNBL(RT) CISPVNBL(RT) CRBPETOP(RT) CRBPPACL CRBPETOP(RT) CRBPPACL(RT) CRBPPEME CRBPVINO CRBPVNBL CISP(RT-W) CISPDOXO CISP(RT-W) CRBPDOCE DOCEGEMC CRBPPACL DOXO DOXOIFOS EPIRIFOS ETOPIFOS MTRXVINO MTRXVNBL Moderate Moderate Moderate Moderate Moderate Moderate High High High Low Moderate High High Moderate Low Moderate Moderate Moderate Moderate Low Low Low Moderate Moderate Moderate Moderate Low Low Low Low Moderate Low Low Moderate Low Low (50 - 70mg/m2); Moderate >70mg/m2 High High Moderate Low Low Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Appendix 3: Febrile Neutropenia G-CSF Prophylaxis Working Group Members Member Role Affiliation(s) Dr. Maureen Trudeau Co-chair; Medical Oncologist Odette Cancer Centre Dr. Kathy Vu Co-chair; Pharmacist Cancer Care Ontario, University of Toronto Dr. Tom Kouroukis Hematologist Juravinski Cancer Centre Dr. Nicole Laferriere Hematologist Thunderbay Regional Health Sciences Centre Dr. Winson Cheung Medical Oncologist BC Cancer Care Mary Doherty Nurse Princess Margaret Cancer Centre Andrea Crespo Pharmacist University Health Network Dr. Carlo DeAngelis Pharmacist Sunnybrook Odette Cancer Centre Dr. Scott Edwards Pharmacist Dr H. Bliss Murphy Cancer Centre Annie Cheung Pharmacist Cancer Care Ontario Nita Lakhani Pharmacist Cancer Care Ontario Brenda Ferris Patient Patient Advisor Appendix 4: Acknowledgements: Reviewers Dr. Leonard Kaizer Dr. Monika Krzyzynowska Dr. David Warr Dr. Peter Ellis Dr. John Goffin Dr. Julie Francis Dr. Helen Mackay Dr. Sebastien Hotte Dr. Eric Winquist Dr. Warren Mason Dr. Shailendra Verma Dr. Kelvin Chan Dr. Teresa Petrella Dr. Tara Baetz Dr. Susan Dent Provincial Head, Cancer Care Ontario; Oncologist/Hematologist, Trillium Health Partners Clinical Lead, Cancer Care Ontario; Medical Oncologist, Princess Margaret Cancer Centre Medical Oncologist, Princess Margaret Cancer Centre Medical Oncologist, Juravinski Cancer Centre Medical Oncologist, Juravinski Cancer Centre Medical Oncologist, Kingston General Hospital Medical Oncologist, Princess Margaret Cancer Centre Medical Oncologist, Juravinski Cancer Centre Medical Oncologist, London Health Sciences Centre Medical Oncologist, Princess Margaret Cancer Centre Medical Oncologist, The Ottawa Hospital Cancer Centre Medical Oncologist, Sunnybrook Health Sciences Centre Medical Oncologist, Sunnybrook Health Sciences Centre Medical Oncologist, Kingston Regional Cancer Centre Medical Oncologist, The Ottawa Hospital Cancer Centre Appendix 5: Acknowledgements: Significant Contributors Kimberley Vu Drug Formulary Pharmacist, Cancer Care Ontario Lauren Hutton University of Toronto PharmD Student John Cao University of Toronto PharmD Student Michael Wan University of Toronto PharmD Student Date of original version: January 18, 2016 Modified: February 16, 2016 (posaconazole dose; added DA-EPOCH+RITU and HYPERCVAD) Modified: March 21, 2016 (SMX-TMP dose) Matthew Dytoc University of Toronto PharmD Student References: 1 Crawford J, Allen J, Armitage J, et al. 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