April 2015 In this issue: 1 Chairperson’s Report: Cross Canada Primary Care Updates Targeted lung denervation for moderate to severe COPD: a pilot study. 4 6 Idiopathic Pulmonary Fibrosis 11 Anemia in COPD patients Chairperson’s Report Spring is finally here, and as such time for a newsletter. I wanted to first thank those of you who have recently joined our group. We sent out a generalized mailing to Family Physicians across the country and got a wonderful response. It is clear that optimizing management of respiratory disease is important to all of you! This spring is particularly exciting due to an initiative that the FPAGC is doing in partnership with CME Solutions and the team at Primary Care Updates. We have secured funding from a number of pharmaceutical companies to create two respiratory hours, one each for Asthma and COPD at the cross Canada Primary Care Updates starting in May in Halifax. We will be presenting Saturday am at each of the venues listed before. Each speaker is an experienced FPAGC executive, with broad respiratory knowledge and speaking experience. We can guarantee an interesting and informative session. City Speaker Date Location PCU Halifax May 22 & 23, 2015 World Trade Centre - Level 3 Alan Kaplan PCU Edmonton May 22 & 23, 2015 Shaw Conference Centre Robert Hauptman PCU Winnipeg May 29 & 30, 2015 RBC Convention Centre Robert Hauptman PCU Niagara Falls May 29 & 30, 2015 Four Points Sheraton Anthony Ciavarella PCU Ottawa June 5 & 6, 2015 Ottawa Conf & Event Centre Alan Kaplan PCU Calgary June 5 & 6, 2015 Robert Hauptman PCU St. John's June 12 & 13, 2015 PCU London June 12 & 13, 2015 Ramada Plaza & Conf Centre airport Comfort Inn - 106 Airport Road. London Convention Centre PCU Toronto East June 19 & 20, 2015 Sheraton Parkway North Alan Kaplan PCU Vancouver June 19 & 20, 2015 VCEC - East Building Anthony Ciavarella Family Physician Airways Group of Canada April 2015 Alan Kaplan Josiah Lowry 1 But it gets even better! We are happy to report that we have received accreditation from the College of Family Physicians (CFPC), we plan on this being a multiple touch-point program designed to teach, but also reinforce the education, with the ultimate design to cause actual behavior change. While this sounds straight-forward, it almost never happens in CME. How many times have you gone to a really good talk, only to not actually make changes in your practice because of it?? Each of these steps will be accredited, along with the following projected time lines: April 30, 2015 Target Date Continuum ready to go live Marketing to PCU pre-reg delegates to start continuum / Pop Quiz #1 May 22 – June 20 PCU rolls out in 10 cities over 5 weeks (Live CME) Videotaping Halifax for future online CME Pop Quiz #1 to go to delegates before this as the first step! June 22, 2015 Eligibility to non-PCU delegates to take online only continuum Aug 22 – Sept 22 Pop Quiz #2 Opens for eligible PCU attendees (3 months post each city) Sept 15, 2015 Continuum Closes to additional online only users as they need 7 months to complete the continuum Nov 22 and beyond Online Refresher Opens for eligible PCU attendees (3 months post Pop Quiz #2) Dec 22 and beyond Pop Quiz #3 Opens for eligible PCU attendees (1 month post Online Refresher) April 17, 2016 Accredited Program Expires Continuum Ends Family Physician Airways Group of Canada April 2015 2 This seems busy, and it is! But each step will be clearly given to all participants for this to be an easy and hopefully entertaining process to go through. While there will be a little bit of homework, it is all intended to be covered for Mainpro Credits through the CFPC. We have the support of the Respiratory Medicine Communities of Practice Group of the College of Family Physicians as well. Our goal is to educate, measure and review. We hope to potentially publish some of the outcomes of this novel form of research, so thank you in advance for participating! There is plenty else going on as you all know. New biologic therapies are being developed for asthma. We have a number of new LABAs, LAMAs, and LABA/LAMAs released or being close to being released for COPD. Newer vaccinations for respiratory illnesses are becoming available for your patients. This newsletter includes an article on idiopathic pulmonary fibrosis, an old disease revisited due to a breakthrough of two new effective therapies. I look forward to seeing you at Primary Care Today in Toronto in May, at any of the Primary Care Updates across the country this spring or at the Family Medicine Forum (the annual College of Family Physicians of Canada conference) in Toronto from November 11-14, 2015. As always, please feel free to contact me with any respiratory question you have at for4kids@gmail.com Watch out for that spring mould, there are lots of old leaves left in your gardens because the snow hit early this year... Alan Kaplan MD CCFP(EM) FCFP Chair, FPAGC See page 4 for the FPAGC Continuum diagram CLEARING THE AIR The Asthma Society of Canada is holding its Second Annual Conference, May 4th and 5th, 2015 at the Courtyard by Marriot Downtown in Toronto. By bringing together leaders from government, industry, academia, and the not-for-profit sectors, we will examine asthma and respiratory allergies in a time of climate change and issue a call-to-action for decision makers. Clearing the Air is an opportunity to demonstrate that health and the environment are inextricably linked. Asthma and allergies, including both the social and economic impacts of climate change on respiratory health demand more attention from policy makers and the public. We are pleased to announce our keynote address as Honourable Glen Murray, Ontario Minister of the Environment and Climate Change. Join us for this breakthrough World Asthma Day event. For more information, or to register and take advantage of early bird tickets, ending March 27th, 2015, please visit: www.clearingtheair.ca. Family Physician Airways Group of Canada April 2015 3 Family Physician Airways Group of Canada April 2015 4 Targeted lung denervation for moderate to severe COPD: a pilot study. Slebos et al. Thorax doi:10.1136/thoraxjnl-2014-206146 TLD is a bronchoscopic therapy based on ablation of parasympathetic pulmonary nerves that release acetylcholine, which, in turn, leads to smooth muscle constriction in the bronchi. It is delivered through a dual-cooled radiofrequency (RF) catheter which is designed to ablate targeted tissue at depth with minimal heating and damage of the inner surface of the airway. This ablation is intended to disrupt motor axons within bronchial nerve branches running along the outside of the main bronchi, thereby blocking parasympathetic signaling to the lungs and decreasing neuronal release of acetylcholine; i.e., acting like a muscarinic antagonist. This has the potential to achieve a permanent sustained effect, which cannot be done with medications. The one-year trial involving 22 COPD patients, 12 who received ablation at 20 watts and 10 who received ablation at 15 watts. The researchers performed a series of pretreatment procedures, including starting patients on tiotropium bromide in a minimum eight-day run-in period, and conducting a pretreatment visual bronchoscopic inspection of the airwaves. During rigid bronchoscopy under general anesthesia, researchers placed and activated an electrode in up to eight rotational positions per bronchus to complete a circumference. The researchers used bronchoscopic and fluoroscopic visualization to guide electrode positioning throughout treatment. They staged two treatments per person, 30 days apart. Patients required no post-procedure medications and stopped taking tiotropium after treatment. After one patient in the 20-watt group dropped out, 11 of 11 patients in that group achieved the primary endpoint of "freedom from documented and sustained worsening of COPD directly attributable to TLD at one year," while nine of the 10 patients in the 15-watt group did so, resulting in an overall 95% achievement. Family Physician Airways Group of Canada April 2015 While there was no mortality from this procedure, there were seven post-procedure serious adverse events, including COPD exacerbation, anaphylactic drug reaction, coronary artery bypass surgery, chest pain resulting in hospitalization, and gastroparesis. Four of those events happened to one person, however. This study showed an improvement in exercise endurance and quality of life compared with medications. The procedures were technically feasible 93% of the time. Primary safety endpoint was achieved in 95%. The clinical safety profiles were similar between the two energy doses. At 1 year, changes from baseline in the 20 W dose compared to the 15 W dose were: FEV1 (+11.6%±32.3 vs +0.02%±15.1, p=0.324), submaximal cycle endurance (+6.8 min±12.8 vs 2.6 min±8.7, p=0.277), and St George's Respiratory Questionnaire (−11.1 points ±9.1 vs −0.9 points ±8.6, p=0.044). The authors are now testing the significance of the TLD therapy in a randomized controlled manner, with the enrollment in a larger randomized Phase II trial that is called AIRFLOW-1 (NCT #02058459). The first patient in this latest trial last entered in October2014 with plans to be treating patients in 15 European sites before the end of the year. Holaira Inc., of Minneapolis, Minnesota, funded this study Editors Note: Just as we have seen the advent of bronchial thermoplasty in asthma, a physical/electric treatment to the lungs may be of benefit in COPD. The trick will be, once proven successful, to decide the correct patient for an interventional procedure. 5 Idiopathic Pulmonary Fibrosis Idiopathic Pulmonary Fibrosis (IPF) is a chronic and debilitating disease, characterized by progressive scarring of the lung.1,2 (fig 1) It is the most common form of idiopathic interstitial pneumonias affecting the lung parenchyma. The progressive scarring of the lung tissue and interstitial space over time is irreversible and significantly impairs proper gas exchange, thus often leading to respiratory failure. While a number of environmental and patient-related risk factors have been proposed, the precise cause of the disease remains unknown. COPD exacerbations. Oftentimes a correct diagnosis may take several months or years.7,8 In addition to exertional dyspnea and dry cough, other common signs of IPF are inspiratory bibasilar crackles (initially evident in the basal areas of the lung) , fatigue, cyanosis, and finger clubbing 5,9. These symptoms, especially dyspnea and cough, cause significant impairment to the quality of life for patients. IPF should be considered in any patient over 40 with unexplained shortness of breath and dry IPF is a fairly rare disease; however, there exists cough. Testing by HRCT is crucial for diagnosis no reliable, large scale data sets on its incidence through determining the presence of a specific raand prevalence. In Canada, using definitions emdiological pattern (usual interstitial pneumonia, ployed by a large retrospective health claims study UIP). In the case an HRCT cannot provide concluin the U.S., the incidence has been estimated to be sive results, the diagnosis can be confirmed by surbetween 2,300 -5,600 cases, whereas the prevagical lung biopsy, after weighing the risk/benefits lence ranges between 5,000-15,000 patients3. of this procedure for an individual patient. Specialized Interstitial Lung Disease clinics in some The overall prognosis of IPF is quite poor; median Canadian cities provide venues to confirm fresurvival has been reported as 2-3 years postquently complex diagnoses, provide comprehendiagnosis, rates lower than the majority of the most sive treatment, as well as aid in registering into common cancers4. Most patients face a gradual clinical trials or lung transplant for select patients. deterioration; however due to the heterogeneity of the disease, some may progress rapidly or experiIPF is believed to be the result of an aberrant ence episodes of rapid deterioration, known as wound healing process following repetitive injury 5,6 acute exacerbations . Given the short median 10 survival, timely diagnoses are thus critical for pa- to the lung epithelium . Initially it was hypothesized inflammation was the major underlying comtient management. The most common symptoms of IPF are gradual in onset, initially presenting as ponent driving fibrosis in IPF, however, this outlook has changed due to the lack of efficacy of dyspnea (shortness of breath) upon exertion and high dose corticosteroids alone or in combination 5 dry cough. These early, non-specific symptoms with other agents11. As recently as 2011, published are commonly mistaken for ageing, cardiac distreatment guidelines recommended best supportive ease, asthma or COPD.7,8 . Such misdiagnosis, or ignoring early symptoms, may explain why IPF is therapy for IPF patient management (supplemental oxygen, pulmonary rehab, and lung transplant in rarely diagnosed immediately. This is extremely important as we are unable to predict how individ- appropriate individuals) and weak or no support for ual patients with IPF will progress due to the afore- the use of a majority of investigational agents. mentioned heterogeneity of the disease (However, However, 3 published studies in 2014 in the New England Journal of Medicine will almost certainly there is a growing body of literature supporting genetic factors as determinants of disease survival). alter current treatment practices. The first trial, PANTHER-IPF, investigated the This is further complicated with the negative imtriple combination of N-acetylcysteine (NAC, an pact of unpredictable acute exacerbations – following an exacerbation, median overall survival antioxidant thought to repair the oxidative damage is ~ 2 months for an IPF patient12; a much greater leading to fibrosis in IPF) with the immunosuppressive agents azathioprine/prednisone compared impact than typically observed in patients with Family Physician Airways Group of Canada April 2015 6 to NAC alone andplacebo. While some benefit was observed with the triple therapy combination in previous studies, the triple therapy arm in PANTHER (NAC/azathioprine/prednisone) was terminated early due to an increased risk of death and hospitalizations. The trial continued with NAC monotherapy vs. placebo; the primary endpoint was not met as NAC did not preserve lung function, nor slowed disease progression relative to placebo. were adjudicated by an external blinded committee, nintedanib significantly reduced the risk of exacerbations in the pooled study group by almost 70%. (fig 6) The trial was not powered to detect differences in mortality, however a numerical trend in reducing all-cause mortality was observed. The rate of lung loss in patients with IPF varies from a rapid aggressive form to a slower progressive form. Either one can have acceleration of disThe ASCEND trial is the latest of 4 phase 3 studies ease due to an IPF exacerbation. (fig 2) These are comparing perfenidone with placebo in IPF. Cur- defined in trials as unexplained worsening or develrently it is unknown how the drug exerts its antifi- opment of dyspnea within 30 days or new diffuse brotic activities. After mixed results in the primary pulmonary infiltrates on chest X-ray and/or HRCT, endpoints of some of the earlier phase 3 studies or parenchymal abnormalities with no pneumothowhich led to approval in some countries (e.g. Cana- rax or pleural effusion (new ground-glass opacida) but not others (e.g. U.S.), ASCEND was deties) . These are separate from acute worsening signed to confirm its efficacy. In the study percaused by other issues such as infection, left heart fenidone met its primary outcome by significantly failure, pulmonary embolism or other cause of reducing FVC decline relative to placebo over a acute lung injury. one year period (reported as a categorical change in FVC – i.e. proportion of patients who had an absoIn primary care, we are an important cog in the lute decline >10% of FVC percent predicted over management of this disease. Understanding how to the study period).(fig 3) Other secondary endpoints were also met, including 6-minute walk test, identify the symptoms of IPF, or at least interstitial but there was no effect on dyspnea, all-cause mor- lung diseases, is especially relevant as new antifibrotic agents become available which may slow tality, or death due to IPF in the single study. A disease progression. Making the correct diagnosis pre-specified mortality analysis of pooled data allows institution of the proper therapy as bronchofrom the ASCEND and 2 earlier of pirfenidone dilators often given for presumed COPD are of no mentioned above did provide evidence that perfenidone may reduce mortality in patients with IPF value. Spirometry will not show obstruction, and ()fig 4) although this was not incorporated into its will likely show restriction. Full PFTs will show decreased gas exchange and the Diffusion capacity label here or in the U.S. will be reduced. Finally, the INPULSIS trials were two identical phase 3 studies investigating the effect of nintedanib compared to placebo in IPF. Nintedanib is a tyrosine kinase inhibitor that specifically targets three receptors and downstream signaling pathways implicated in IPF pathogenesis (plateletderived growth factor receptor, fibroblast growth factor receptor, and vascular endothelial growth factor receptor). Both INPULSIS trials met their primary endpoints: nintedanib significantly reduced the rate of decline in FVC over one year compared to placebo.(fig 5) One of the trials also showed that nintedanib significantly reduced investigator reported acute exacerbations; when exacerbations Family Physician Airways Group of Canada April 2015 Once pulmonary fibrosis is entertained, there is a significant differential diagnosis that must be entertained including infection, drug reaction and connective tissue disorders. HRCT is often diagnostic, but surgical biopsy may be necessary. Fortunately, there are Interstitial Lung disease clinics across the country to assist our community respiratory specialists if necessary. Your patient may also be considered for lung transplantation, which has been shown to reduce the risk of death by 75% after adjustment on potential confounding variables13. 7 We will need to support our patients through the new therapies as mentioned, and GI side effects are common. In addition, prevention of infectious exacerbations can be considered with appropriate vaccinations. Acute exacerbations of IPF are often a disease altering event and these also may be reduced by anti-fibrotic therapies. The ATS suggests treating GERD in these patients also, as it may assist in disease progression. 2. 3. 4. 5. 6. For those patients with more severe illness, access 7. to pulmonary rehabilitation is important and end of 8. life care will become an issue further along. You may be the person to initiate Oxygen therapy as the 9 disease progresses. We can now do something substantial for this disease; make the diagnosis, and make it earlier! 1. Raghu G et al. Am J Respir Crit Care Med 2011;183:788-824. 10. 11. 12. 13. ATS and ERS. Am J Respir Crit Care Med 2002;165:277-304. Raghu et al. Am J Respir Crit Care Med 2006; 174: 810-816. Vancheri C et al. Eur Respir J 2010; 35P: 496-504. Ley B et al. Am J Respir Crit Care Med 2011; 183:431-40. Kim et al. Proc Am Thorac Soc 2006;3: 285-292 Collard HR et al. Respir Med 2007:101: 1350-1354. Meltzer EB and Noble PW. Orphanet J Rare Dis 2008; 3: 8 doi:10.1186/1750-1172-3-8. Borchers et al. Clin Rev Allergy Immunol 2011;40:117-134. Gunther et al., Eur Respir Rev 2012, 21:152160. Ryu et al., Mayo Clin Proc 2014 Sing et al, Eur Resp J 2011 37: 356-363 Thabut G et al. J Thorac Cardiovasc Surg. 2003;126(2):469–475 Pathology (Fig 1) Family Physician Airways Group of Canada April 2015 8 Progression of illness: (fig 2) IPF: variable natural history Lung microinjuries Onset of symptoms Survival 9%) Acute exacerbations Asymptomatic period (months to years) Slow progressive course Rapid progressive course 0 1 2 3 4 5 6 Time (years) 7 8 9 10 • Most patients experience a slow but steady worsening of their disease: – About 10% experience unpredictable acute exacerbations that may initiate the terminal phase of their disease • A minority of patients have a short duration of illness with a rapidly progressive clinical course King TE et al. Lancet 2011;378(9807):1949–1961. Pirfenidone and lung function (fig 3) Pirfenidone slows the decline in mean FVC Change in FVC 0 Pirfenidone (N=278) Mean Change (ml) –100 –200 –300 –400 Placebo (N=277) –500 0 13 26 39 52 Week • The mean decline from baseline in FVC was −235 mL vs. −428 mL (pirfenidone vs. placebo; absolute difference, −193 mL; relative difference, 45.1%; P<0.001) FVC, forced vital capacity King TE et al. N Engl J Med. 2014;370(22):2083−2092. Family Physician Airways Group of Canada April 2015 9 Pirfenidone and mortality(fig 4) : Pirfenidone reduces relative risk of death or disease progression by 43% Progression-free Survival Patients (%) 100 90 80 70 No. at Risk Pirfenidone Placebo Pirfenidone (N=278) 60 50 40 Placebo (N=277) Hazard ratio, 0.57 (95% CI, 0.43–0.77) P<0.001 30 20 10 0 0 13 26 Week 39 52 276 273 269 262 243 225 219 192 144 113 King TE et al. N Engl J Med. 2014;370(22):2083−2092. Nintedanib and lung function(fig 5) 0 -50 -100 -150 -113.6 -200 -250 -300 -223.5 109.9 mL/year (95% CI: 75.9, 144.0) p<0.001 Nintedanib 150 mg bid (n=638) Placebo (n=423) Mean (SE) observed change from baseline in FVC (mL) Adjusted annual rate (SE) of decline in FVC (mL/year) Primary efficacy endpoint in pooled data Nintedanib 150 mg bid Placebo 0 2 4 6 12 24 Week 36 52 No. of patients Nintedanib 626 616 613 604 587 569 519 Placebo 417 408 407 403 395 383 345 *Adjusted mean difference vs placebo at week 52 based on MMRM 110.6 mL (95%CI: 83.2, 137.9) p<0.001) Nintedanib is an investigational compound and is not yet approved for sale; its safety and efficacy have not yet been fully established Family Physician Airways Group of Canada April 2015 Richeldi L., et al. N Engl J Med 2014;370:2071-82. 10 Nintedanib and acute exacerbations (fig 6) Anemia in COPD patients Boutou AK1, Hopkinson NS1, Polkey MI1.Anaemia in chronic obstructive pulmonary disease: an insight into its prevalence and pathophysiology. Clin Sci (Lond). 2015 Mar;128(5):283-95. doi: 10.1042/CS20140344 There is a growing literature regarding the extra-pulmonary manifestations or co-morbidities of COPD, which can have a significant impact on symptom burden and disease progression. The prevalence of anaemia in COPD has a prevalence that varies between 4.9% and 38% depending on patient characteristics and the diagnostic criteria used. Systemic inflammation seems to be an important factor for its establishment and repeated bursts of inflammatory mediators during COPD exacerbations could further inhibit erythropoiesis. Other factors such as renal impairment, malnutrition, low testosterone levels, growth hormone level abnormalities, oxygen supplementation, theophylline treatment, inhibition of angiotensin-converting enzyme and aging itself are additional factors that could be associated with the development of anaemia. This review evaluates the published literature on the prevalence and significance of anaemia in COPD and explains the reasons for the high variability reported and investigates the complex pathophysiology underlying the development of anaemia in these patients. Editors Note: The patient with COPD is multimorbid, with CV disease, osteoporosis, mental health and visual comorbidities. Add anemia to the list. Family Physician Airways Group of Canada April 2015 11 The Board of Directors CHAIR Alan Kaplan 17 Bedford Park Avenue Richmond Hill, ON L4C 2N9 Bus:905-883-1100 Fax: 905-884-1195 for4kids@gmail.com VICE CHAIR Anthony Ciavarella 27107 Fraser Highway Aldergrove, BC V4W 3R2 Bus:604-856-3321 Fax: 604-857-2231 ciavarella@shaw.ca SECRETARY/ TREASURER Robert Hauptman Salvus Family Medical Clinic 62 -143 Liberton Drive St. Albert, AB T8N 6A7 Bus:780-460-4562 Fax: 780-460-4550 docrob@telusplanet.net DIRECTORS REASEARCH CHAIR Jacques Bouchard Clinique de medecine familiale de la Malbaie 515 rue St-Erienne La Malbaie, PQ G5A 1W7 Bus:418-683-8393 Fax: 418-687-9024 jacques.bouchard@videotr on.ca John Rea 104-348 Muskoka Rd 3 N Huntsville, ON P1H 1H8 Bus:705 789 2355 Fax: 705-789-1051 reajc2@hotmail.com John Li 1789 Mountain Road, Suite 207 Moncton, NB E1G 1A7 Bus:506-859-8696 Fax: 506-383-8224 Douglas Tweel 199 Grafton St Charlottetown, PEI C1A 1L2 Bus:902-629-8843 Fax: 902-628-6024 dt_gcri@hotmail.com drjohnli4@gmail.com Josiah Lowry Suite 200, 100 Colborne St. W Orillia, ON L3V 2Y9 Bus:705-327-3330 Fax: 705-327-7675 Jbldr.2381@xplornet.com ADMINISTRATION Glyn Smith 132 Warwick Road Edmonton AB T5X 4P8 Bus: 866-406-4345 Fax: 780-475-7968 admin@fpagc.com www.fpagc.com Robert Woodland Major’s Path Family Practice #301, 35 Major’s Path St. John's, NL A1A 4Z9 Bus:709-579-2324 Fax: 709-579-3419 woodlandclinic@nfld.net Ken Bayly 701 Ave P North Saskatoon, SK S7L 2W1 Bus: 306-382-5854 Fax: 306-382-7477 kennethbayly@sasktel.net Andrew Cave 1A1 8440 112 Street Edmonton AV Bus: 780-433-4211 acave@cha.ab.ca John Kirkpatrick 8 Peppett Street North Sydney Nova Scotia, B2A 2M7 Bus: 902-794-2868 Fax: 902-794-4448 jhk@eastlink.ca Gordon Dyck Clearspring Medical Clinic 1 – 390 Main Street Steinbach, MB R5G 1Z3 Bus:(204) 326-6111 Fax: 204-326-6952 gdyck4boys@hotmail.com The FPAGC wishes to thank the following companies for their continued support of our programs: AstrraZeneca Bayer Boehringer Ingelheim CV Technologies Family Physician Airways Group of Canada GlaxoSmithKline Merck Frost Novartis Pfizer April 2015 Takeda Talecris Trudell Medical International 12
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