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2/27/2013 TAKING A STATIN CAN REALLY BE A PAIN PREVENTION AND MANAGEMENT OF STATIN INTOLERANCE Randy W. Burden, PharmD, MDiv, PhC, FNLA Presbyterian Medical Group Belen, NM Diplomate, Accreditation Council for Clinical Lipidolgy 1 2/27/2013 Prevention of Statin Muscle Related Symptoms Verify y need for statin therapy py Identify patients at high risk for statin intolerance and modify risk if possible before starting statin Avoid high doses of statins Minimize potential for statin food or drug i t interactions ti 2 2/27/2013 Case Study • DC is a 68 year old petite Asian female (BMI 18) with a history of 1 ppd tobacco use for 40 years and hypertension (BP 145/90). • Her sister has had muscle related side effects with statin use • Labs:Total cholesterol 280 mg/dL, HDL 30 mg/dL, Triglyceride 250 mg/dL, LDL 200 mg/dL, TSH 7.4 mIU/L. • Meds: lisinopril 20 mg daily and verapamil 240 mg daily. • Framingham F i h risk i k score – 26% • Referred for lipid management – would you start her on a statin? If yes, which one and at what dose? 3 2/27/2013 Comorbidities and Other Conditions that May Increase the Risk of Statin-Induced Myopathy • • • • • • Reduced renal function (creatinine > 1.5 ULN) Active or unexplained p hepatic p disease Untreated hypothyroidism Diabetes mellitus Hypertension Intercurrent illness, surgery or trauma Vandenberg et al. Curr Atrheroscler Rep. 2010;12:48‐57. Shannon J et al. US Pharm. 2012;37(2):55‐59. 4 2/27/2013 Factors That Increase the Risk of Statin-Induced Myopathy • • • • • • • Advancing age Use with caution if small bodyy frame,, especially p y if female Race/ethnicity: rosuvastatin clearance ↓ in Asians Grapefruit juice > 1 quart/day Alcoholism Illicit drugs (eg, cocaine, amphetamines) G Genetics ti Vandenberg et al. Curr Atrheroscler Rep. 2010;12:48‐57 5 2/27/2013 SEARCH Trial • 12,000 myocardial infarction survivors • Double blind, randomized to 80 or 20 mg of simvastatin • Average follow-up 6 years • 53 cases of myopathy in the 80 mg and 3 in the 20 mg group • Risks: older age, female, 2x if on diltiazem Search Collaborative Group . Lancet, 2010;(376) 1658-1669, 6 2/27/2013 Genetic Risk Factors SEARCH T Trial i l -SLC01B1 SLC01B1 (OATP) • In a subgroup analysis 85 subjects with myopathy th (including (i l di iincipient i i t myopathy), th ) allll on 80 mg simvastatin, underwent a genome wide scan • More than 60% of simvastatin induced myopathy cases were attributed to at least one common variant in the SLC01B1 gene • SLC01B1 encodes for an organic anion transporter known as OATP1 p uptake p of statins • OATP1 mediates the hepatic Search Collaborative Group. N Engl J Med. 2008;359:789-99 7 2/27/2013 Factors That Increase the Risk of Statin-Induced Myopathy Statin St ti Properties P ti • High systemic exposure (statin dose) • Potential P i l ffor d drug-drug d iinteractions i metabolized b li d by CYP pathways – particularly CYP450 3A4 • P-Glycoprotein (pGp) interactions also assoicated primarily with 3A4 metabolized drugs • Lipophilicity (theoretical) • High bioavailability • Limited protein binding Kellick KA. LipidSpin. 2012;10(3): 9-12. 8 2/27/2013 The Prediction of Muscular Risk in Observational Conditions Study (PRIMO) • Prospective observational design PCP s • 7924 French patients from 2752 PCP’s • Patients included if on high dose statin for 3 months or statin had been ↓ or stopped pp in last 3 months g ((atorvastatin 40-80 mg, g fluvastatin • Statin dosing XL 80mg, pravastatin 40mg or simvastatin 4080mg) Bruckert. Cardiovasc Drug Ther. 2005;19:403-14 9 2/27/2013 PRIMO: Risk of Muscular Symptoms with Individual Statins Percentage of patients with muscular symptoms* symptoms Odds Ratio† [95% CI] P value‡ Statin Dosage (n=832) Pravastatin 40 mg/day 10.9% Atorvastatin 40–80 mg/day 14.9% 1.28 [1.02–1.60] 0.035 Simvastatin 40–80 mg/day 18.2% 1.78 [1.39–2.29] <0.0001 Fluvastatin 80 mg/day 5.1% 0.33 [0.26–0.42] <0.0001 *% values relative to the total number of patients with or without muscular symptoms. † Odds ratios were calculated using pravastatin as the reference. reference ‡ P values were determined by Pearson’s Chi-squared test. Bruckert E et al. Cardiovascular Drugs and Therapy. 2005 ;19: 403–414. 10 2/27/2013 Distribution of the time of onset of muscular symptoms after initiation of statin therapy or titration to higher doses Bruckert. Cardiovasc Drug Ther. 2005;19:403-14. 11 2/27/2013 CK >10 X ULN Frequency by % LDL-C LDL C Reduction 3.0 CK > 10 UL LN 2.5 Cerivastatin (0.2 (0 2 - 0.8 0 8 mg) Pravastatin (40 - 80 mg) Simvastatin (40 - 80 mg) Atorvastatin (10 - 80 mg) Rosuvastatin (5 - 80 mg) Fluvastatin (40-80 mg) 20 2.0 1.5 1.0 0.5 0.0 20 30 40 50 60 70 % LDL-C Reduction Jacobson T. Am J Cardiol 2006;97[suppl]:44C–51C 12 2/27/2013 Drug Drug Interactions Drug-Drug CYP3A4 • Simvastatin** Simvastatin • Atorvastatin** • Lovastatin Lovastatin** CYP2C9/other pathways # DDI 77 65 58 **significant interaction with grapefruit juice #DDI • • • • Fluvastatin Rosuvastatin+ Pravastatin+ Pitavastatin 31 30 27 10 + hydrophilic - greater hepatoselectivity Micromedex 2012. Accessed December 27, 2012. Neuvonan et al. Clin Pharmacol Ther 2006;80:565-81... Kellick KA. LipidSpin. 2012;10(3): 9-12. 13 2/27/2013 FDA Safety Announcement 6/8/11: Simvastatin Maintain 80 mg dose only if taking for > 12 months without muscle symptoms Do not start new patients on 80 mg If not at LDL goal on 40 mg change to another statin Do not exceed 10 mg daily with verapamil or diltiazem Do not exceed 20 mg daily with amlodipine, ranolazine, or *amiodarone. Contraindicated (new): posaconazole, posaconazole gemfibrozil, gemfibrozil cyclosporine, danazole Avoid > 1 qt/day grapefruit juice http://www.fda.gov/Drugs/DrugSafety/ucm256561.htm *originally was 10 mg but redacted in Dec 2011 due to lack of supportive evidence 14 2/27/2013 FDA Safety Announcement 2/28/12: Lovastatin • Do not exceed 20 mg with danazol, diltiazem, verapamil • Do not exceed 40 mg with amiodarone • Contraindicated C t i di t d (new): ( ) posaconazole, l boceprevir, telaprevir • Avoid: clyclosporin and gemfibrozil and > 1 quart/day of grapefruit juice http://www.fda.gov/Drugs/DrugSafety/ucm293101.htm 15 2/27/2013 Back to the Case Study • DC is a 68 year old petite Asian female (BMI 18) with a history of 1 ppd tobacco use for 40 years and hypertension (BP 145/90). • Her sister has had muscle related side effects with statin use • Labs:Total cholesterol 280 mg/dL, HDL 30 mg/dL, Triglyceride 250 mg/dL, LDL 200 mg/dL, TSH 7.4 mIU/L. • Meds: lisinopril 20 mg daily and verapamil 240 mg daily. • Framingham F i h risk i k score – 26% • Referred for lipid management – would you start her on a statin? If yes, which one and at what dose? 16 2/27/2013 National Lipid Association (NLA) Statin Safety Assessment Task Force • Definitions of muscle findings: – Myalgia (1.5%*) • muscle ache or weakness without creatine kinase (CK) elevation – Myopathy (5/100,000*) • myalgia, plus elevation in CK >10 x ULN – Rhabdomyolysis (1.6/100,000*) • CK 10,000 > IU/L, or plus an elevation in serum creatinine or medical • CK >10 x ULN p intervention with IV hydration * 180,000 patients in 21 major statin trials for an ave of 3 years Law M et al. Am J Cardiol. 2006; 97 (suppl 8A): 52C-61C. McKenney et al. Am J Cardiol 2006;97(suppl 8A):89C–94C. 17 2/27/2013 Case Study • • • • • DP is a 56 year old Hispanic male M di l problems Medical bl iinclude: l d MI iin 1996 1996, h hypertension, t i asthma, th diabetes, GERD, hypovitaminosis D, history of statin intolerance Lipids: T Cholesterol 245 mg/dL, Triglyceride 160 mg/dL, HDL 37 mg/dL, /dL LDL 176 mg/dL, /dL non-HDL HDL 208 mg/dL /dL Meds: metformin 500 mg BID, ranitidine 150 mg BID, vitamin D3 1000 IU daily, lisinopril 20 mg daily, hydrochlorothiazide 12.5 mg d il albuterol daily, lb t l MDI prn, metoprolol t l l 50 mg BID BID, clonidine l idi 0 0.2 2 mg daily, fish oil capsules 2 caps daily. Over the past 11 years he has tried atorvastatin, simvastatin, sim astatin/e etimibe and lo simvastatin/ezetimibe, lovastatin astatin all ca causing sing weakness eakness and muscle pain. He had flushing with niacin and a rash with fenofibrate. 18 2/27/2013 Recommendations from the NLA Statin Safety Task Force for Muscle Issues PATIENT MONITORING • Obtain baseline CK levels in high risk patients ( renal dysfunction, transplants, polypharmacy), optional for others • Monitoring with CK measurement only in symptomatic patients • Rule out other etiologies of muscle symptoms or asymptomatic CK elevations • Exacerbating factors should be considered (grapefruit juice consumption concomitant medications consumption, medications, herbal remedies remedies, infection, sepsis, alcohol abuse) McKenney JM et al. Am J Cardiol. 2006;97:89C-94C Thompson PD et al. Am J Cardiol. 2006;97:69C-76C 19 2/27/2013 Etiologies of Muscle Symptoms or Increased CK Level o Exercise or increased physical activity (particularly in unaccustomed individuals) y p , o Medication: colchicine,, amiodarone,, clyclosporin, glucocorticoids, cimetidine o Trauma, falls, accidents o Seizures, shaking chills o Hypothyroidism H th idi o Infections o Carbon monoxide poisoning o Inherited metabolic muscle disease • Carnitine PalmitoylTransferase II deficiency (1/270 carrier) • McArdle disease - myophosphorylase deficiency (1/170) • Myoadenylate deaminase deficiency Kellick KA. LipidSpin. 2012;10(3): 9-12. Vandenberg et al. Curr Atrheroscler Rep. 2010;12:48-57. Mc Kenney et al. Am J Cardiol. 2006;97(suppl 8A): 89C -94c Eckel RH. J Clin Enocrinol Metab. 2010;95(5):2015-22. Del Grande M et al. Int J Clin Rhematol. 2012;7(3):243-246. 20 2/27/2013 Triggering Factors for Muscular Symptoms • Of the PRIMO patients who reported muscular symptoms with statin therapy (n=832), 41% noted a potential triggering factor: – 53% reported unusual physical exertion – 30% reported taking a new medication Bruckert E et al. Cardiovascular Drugs and Therapy. 2005 ;19: 403–414. 21 2/27/2013 Understanding Statin Use in America and Gaps in Patient Education (USAGE) OBJECTIVE: to assess the attitudes, attitudes beliefs, beliefs practices, practices and behavior of 8918 current and 1220 former statin users. Muscle–related side effects while taking a statin reported by 29% of all participants • 25% among current users • 60% among former users On average, respondents reported using 3 medications or supplements with the potential for statin interaction Cohen et al. J Clin Lipidol. 2012;6:208-215. 22 2/27/2013 Recommendations from the NLA Statin Safety Task Force for Muscle Issues MANAGEMENT OF MUSCLE SYMPTOMS • Intolerable muscle symptoms: – Discontinue statin regardless g of CK levels and rechallenge only after patient becomes asymptomatic • Tolerable muscle symptoms y p and: – Mild CK elevation < 5x UL: May continue statin and use symptoms as guide to stop or continue treatment – Moderate to severe CK elevation: Discontinue statin therapy py and weigh risks and benefits – CK elevation with elevated creatinine or need for IV hydration: Discontinue statin therapy McKenney JM et al. Am J Cardiol. 2006;97:89C-94C Thompson PD et al. Am J Cardiol. 2006;97:69C-76C 23 2/27/2013 Approaches to Patients with History of Statin Related Muscle Pain Restart R statin i therapy h when h patient i iis asymptomatic – Try up to 2-3 2 3 different low dose statins and titrate to highest tolerated dose (1/2 max dose) • Add non non-statin statin therapy if LDL not at goal – Red Yeast Rice? – Alternate day day, 2-3x 2 3x week, week or weekly dosing – After vitamin D replenishment 24 2/27/2013 Fluvastatin XL • 199 moderate d t or high hi h risk i kd dyslipidemic li id i patients ti t • Prior history of statin induced muscle related side effects • 3 treatment arms for 12 weeks – double blinded – Ezetimibe 10mg/d (n= 66) – Fluvastatin XL 80mg/d (n= 69) – Fluvastatin XL 80mg/d + ezetimibe 10mg/d (n= (n 64) Stein EA et al. Am J Cardiol 2008;101:490–496 25 2/27/2013 Incidence of and time to first muscle-related side effect Number of Patients Median Time to (Incidence Rate) First Event (wks) Ezetimibe (n= 66) 16 (24%) 3.07 Fluvastatin XL (n=69) 12 (17%) 1.36 9 (14%) 2.14 5 (8%) 2.57 3 (4%) 0.43 2 (3%) 1.57 Treatment Group Any MRSE recurrence Fluvastatin XL/ezetimibe (n=64) MRSE recurrence leading to discontinuation Ezetimibe (n=66) Fluvastatin XL ( n=69) Fluvastatin XL/ezetimibe (n=64) Stein EA et al. Am J Cardiol 2008;101:490–496 . 26 2/27/2013 Red Yeast Rice Monascus purpureus • • • • Rice fermented with a red mold mold. Also known as Hong Qu Contains 14 active compounds called monacolins Used in China since 800 AD FDA regulations prohibit inclusion of monacolin K (lovastatin) above a certain level in RYR • To avoid being an unapproved drug, RYR products typically do not disclose levels of monacolins nor do they have a standardized monacolin K content • Some RYR products contain citrinin, a mycotoxin that is nephrotoxic in animals. Gordon RY et al. Arch Inter Med. 2010;170(19);1722-27. Kaolpakchi AL et al. Ann Intern Med. 2010;152(2):133-134. 27 2/27/2013 Red Yeast Rice Trials Study Intervention Duration Becker RYR 1800mg BID (lovastatin 6mg/d) vs. Placebo 24 weeks RYR 2400mg BID (lovastatin 10mg/d) vs. Pravastatin 20mg BID 12 weeks Halbert Population 62 dyslipidemic patients with history of statin intolerance due to myalgia Results No difference in pain severity scores between groups. 7% of RYR group and 3% of placebo discontinued therapy due to myalgia. RYR reduced LDL-C LDL C by 21% 21%. 43 dyslipidemic patients with history of statin intolerance due to myalgia No difference in treatment discontinuation rates. Discontinuation due to myalgia was 5% for RYR and 9% for P Prava (p=0.99). ( 0 99) LDL LDL-C C reduction was 30% for RYR and 27% for Pravastatin. Becker. Ann Intern Med. 2009;150:830. Halbert. Am J Cardiol. 2010;105:198. Adapted from Abd and Jacobson. Expert Opin Drug Safety 2011:10(3):1-15 28 2/27/2013 Alternative Statin Dosing in Statin Intolerant Patients Investigator Reddy 2009 Retrospective chart review N 23 Intervention rosuvastatin 5-40 mg or atorvastatin 20-40 mg twice-weekly + ezetmibe t ib 10 mg twice t i weekly kl and colesevelam 625 mg twice daily Duration mean, 4.5 months Results 87% patients tolerated therapy. Mean LDL-C reduction from baseline not statistically significant as 78% were already at ATP II goals l before b f starting therapy. Ruisinger 2009 Retrospective chart review 50 rosuvastatin 2.5 to 20mg once weekly 4 months 74% of patients tolerated therapy. Mean LDL-C reduction 23% Gadalara 2008 Retrospective chart review 40 rosuvastatin 5 or 10 mg twice-weekly 2-12 months (3 months ave) Backes 2008 Retrospective chart review 51 rosuvastatin (mean=5.6mg) every-other-day 4 months 72% of patients tolerated therapy. Mean LDL-C reduction 35% Athyros 2008 Interventional, noncontrolled 56 atorvastatin 10mg Twice weekly + ezetimibe 10mg/d 3months 91% of patients tolerated therapy. Mean LDL-C reduction 37% 80% tolerated therapy. Mean LDL-C reduction 43%. Adapted from Reinhart et al. Am J Health-System Pharmacy. 2012;69(4):291-300. 29 2/27/2013 Limitations of Alternative Day Statin Dosing Trials • • • • Retrospective designs placebo control g groups p Lack of p Small study populations Some trials allowed p patients to continue other lipid lowering drugs • Event reduction- unknown 30 2/27/2013 The High High-Dose Dose Rosuvastatin Once Weekly Study • R Randomized d i d tto rosuvastatin t ti 80 mg once weekly kl (n=10) or atorvastatin 10 mg daily (n=10) • Double-blind Double blind • Parallel group • 8 week k pilot il t study t d • Overall mean LDL-C reduction of 29% in both groups. groups • No statin related muscle symptoms reported Backes JM et al. JCL. 2012:6;362-367. 31 2/27/2013 Vitamin D • Low vitamin D levels associated with myalgia • Low vitamin D levels associated with reduced muscle function • A specific nuclear receptor for vitamin D has been isolated in myocytes Lips P. Prog Biophys Mol Biol.2006;92:4-8. Bischoff-Ferrari. Am J Clin Nutr.2004;80-752-8. Bischoff Ferrari. Histochem J . 2001;33:19-24 32 2/27/2013 Vitamin D and Myalgias • Vitamin D deficiency is common among patients with statin-associated myalgias • Vitamin D deficiency might be a risk factor in developing statin-intolerance statin intolerance in patients with certain polymorphisms • Anecdotally, y, manyy patients p with vitamin D deficiency that developed myalgias once starting a statin have noted resolution of myalgias and /or greater tolerance for statins in retreatment after vitamin D repletion. Linde et al. Dermato-Endocrinology. 2010; 2:2, 77-84. Bittner V et al. J Am Coll Card. 2010;55:A177.E1659.. Duell PB et al. Circulation. 2008;118:S_470. Lee JH et al. J Am Coll Card. 2008; 52(24): 1949-1953. 33 2/27/2013 Vitamin D Repletion • 21 vitamin D deficient patients (< 30ng/mL) complained of intolerable myalgias while on statins • After 2-3 months of vitamin D repletion, 15 patients were rechallenged with statin therapy • 14 (93%) remained symptom free, 1 with mild and tolerable symptoms able to continue statin Linde et al. Dermato-Endocrinology. 2010; 2:2, 77-84. 34 2/27/2013 Vitamin D Repletion • 128 statin t ti myalgia l i patients ti t • 82 of 128 (patients with Vitamin D below 32 ng/ml) • 38 of 82 continued statins + agreed to therapy with 50,000 50 000 units ergocalciferol a week for 3 months • 35 of 38 patients (92%) became myalgia free Ahmed W. Translational Research. 2009;153:11-16 35 2/27/2013 Vitamin D • Study St d Limitations Li it ti – – – – Not randomized No placebo group Not blinded Myalgia reports were subjective, no objective questionnaire – Small number of participants Ahmed W. Translational Research. 2009;153:11-16 36 2/27/2013 Non-Statin Approaches to Patients with Statin Related Muscle Pain • If still unable to tolerate statin therapy then: – start on non-statin therapy (ezetimibe niacin (ezetimibe, niacin, BAS) or combinations – consider id more aggressive i dietary interventions 37 2/27/2013 Ezetimibe + Colesevelam • R Retrospective t ti review i off 16 patients ti t with ith statin t ti intolerance and diabetes mellitus • Treated with ezetimibe 10mg/day and colesevelam 1.875mg BID for 3 months • LDL-C LDL C was reduced 42% from baseline • 50% achieved LDL-C goal of < 100 mg/dL • No reports of myalgia Rivers. Endocrin Pract. 2007;13:11 38 2/27/2013 Diet Change • Plant stanols and sterols – found naturally in many nuts, seeds grains, fruits, vegetable oils and legumes – Inhibit cholesterol absorption – 2-3 gm/day decreases LDL by 6-15% • Portfolio diet – – – – – Soy based foods instead of meat High in viscous fiber Replace butter/margarine with plant sterol enriched margarine Increase nut intake, especially almonds 5-25% LDL reduction Houston MC, et al. Progress in Cardiovascular Diseases. 2009;52:61-94 ; Jenkins DJ,, et al. Am J Clin Nutr. 2005;81:380-387 39 2/27/2013 Back to the Case Study • • • • • DP is a 56 year old Hispanic male M di l problems Medical bl iinclude: l d MI iin 1996 1996, h hypertension, t i asthma, th diabetes, GERD, hypovitaminosis D, history of statin intolerance Lipids: T Cholesterol 245 mg/dL, Triglyceride 160 mg/dL, HDL 37 mg/dL, /dL LDL 176 mg/dL, /dL non-HDL HDL 208 mg/dL /dL Meds: metformin 500 mg BID, ranitidine 150 mg BID, vitamin D3 1000 IU daily, lisinopril 20 mg daily, hydrochlorothiazide 12.5 mg d il albuterol daily, lb t l MDI prn, metoprolol t l l 50 mg BID BID, clonidine l idi 0 0.2 2 mg daily, fish oil capsules 2 caps daily. Over the past 11 years he has tried atorvastatin, simvastatin, sim astatin/e etimibe and lo simvastatin/ezetimibe, lovastatin astatin all ca causing sing weakness eakness and muscle pain. He had flushing with niacin and a rash with fenofibrate. 40 2/27/2013 Prevention of Statin Muscle Related Symptoms Verify y need for statin therapy py Identify patients at high risk for statin intolerance and modify risk if possible before starting statin Avoid high doses of statins Minimize potential for statin food or drug i t interactions ti 41 2/27/2013 Approaches to Patients with History of Statin Related Muscle Pain Restart R statin i therapy h when h patient i iis asymptomatic – Try up to 2-3 2 3 different low dose statins and titrate to highest tolerated dose (1/2 max dose) • Add non non-statin statin therapy if LDL not at goal – Red Yeast Rice: not recommended – Alternate day day, 2-3x 2 3x week, week or weekly dosing – After vitamin D replenishment 42 2/27/2013 Non-Statin Approaches to Patients with Statin Related Muscle Pain If still unable to tolerate statin therapy py then Start on non-statin therapy/combos • Ezetimibe • Niacin • Bile acid sequestrants q Consider more aggressive dietary interventions Add plant stanols and sterols Portfolio diet 43 2/27/2013 Acknowledgements Terry A. Jacobson, MD, FNLA Professor of Medicine Director, Office of Health Promotion and Disease Prevention Emory University Atlanta, GA Diplomate American Board of Clinical Lipidology Diplomate, 44