1 Joint NDAC/EMDAC Meeting January 13, 2005 Mevacor TM Daily 20 mg Tablets Rx-to-OTC Switch Daiva Shetty, M.D. Division of Over-the-Counter Drug Products.

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Presentation transcript:

1 Joint NDAC/EMDAC Meeting January 13, 2005 Mevacor TM Daily 20 mg Tablets Rx-to-OTC Switch Daiva Shetty, M.D. Division of Over-the-Counter Drug Products

2 Joint NDAC/EMDAC Meeting January 13, 2005 Overview Important aspects of an actual use study Actual use issues to address for Mevacor OTC Actual Use Study # 084 (CUSTOM) –Results of consumer behavior –Differences in data analysis

3 Joint NDAC/EMDAC Meeting January 13, 2005 Important Aspects of an Actual Use Study Simulate OTC use –Recruitment through mass media –Site locations in pharmacies or grocery stores Have few exclusion criteria

4 Joint NDAC/EMDAC Meeting January 13, 2005 Important Aspects of an Actual Use Study Objectives depend on the specific product and concerns related to that product: –Self-diagnosis –Self-selection –De-selection –Compliance, dosing, duration of use –Off-label use –Safety and efficacy in OTC population

5 Joint NDAC/EMDAC Meeting January 13, 2005 Actual Use Issues to Address for Mevacor OTC Are consumers able to: –Self-diagnose hypercholesterolemia Know their cholesterol values Understand serum cholesterol values –Identify risk factors for CHD –Self-select based on the label eligibility criteria and the contraindications for use

6 Joint NDAC/EMDAC Meeting January 13, 2005 Actual Use Issues to Address for Mevacor OTC Are consumers able to self-treat: –Follow label directions for dosing and duration of use for follow-up cholesterol test when to see a physician –Understand the treatment goal –De-selection Identify risks during therapy with Mevacor

7 Joint NDAC/EMDAC Meeting January 13, 2005 Study #084 Consumer Use Study of OTC MEVACOR TM (CUSTOM)

8 Joint NDAC/EMDAC Meeting January 13, 2005 Label Criteria

9 Joint NDAC/EMDAC Meeting January 13, 2005 CUSTOM: Decision to Purchase Participated in purchase decision 3316 NoYes Purchased Mevacor OTC Needed more information To obtain cholesterol To talk to a doctor Personal health information Study related information

10 Joint NDAC/EMDAC Meeting January 13, 2005 Self-Selection of Users Based on the Label Criteria Total Users N=1061 met age criteria? Yes No N=262 N=797 LDL-C mg/dL? Yes No N=516 N=281 >1 risk factor for CHD? Yes No N=75 N=206 2 excluded (26%)

11 Joint NDAC/EMDAC Meeting January 13, 2005 Self-Selection of Users Based on the Label Criteria liver disease? No Yes N=3 N=203 history of statin induced muscle weakness or pain? No Yes N=18 N=185 N=206 (19%)

12 Joint NDAC/EMDAC Meeting January 13, 2005 Self-Selection of Users Based on the Label Criteria triglycerides < 200 mg/dL? Yes No N=53 N=110 10% of all Users fit the label criteria N=163 >1 risk factor + HDL-C <60 mg/dL? Yes No N=22 N=185

13 Joint NDAC/EMDAC Meeting January 13, 2005 Self-Selection Demographics 1061 Users 430 (40.5%) females 631 (59.5%) males Yes No 269 (62.6%) Age > 55 yrs? 161 (37.4%) < 40 years: 23 (5.4%) years: 24 (5.6%) years: 45(10.5%) years: 69 (16.1%)

14 Joint NDAC/EMDAC Meeting January 13, 2005 Use of Mevacor in Women under % of all women Users were < 50 years –Many of these women are likely of child bearing potential Because during the first trimester of pregnancy women may not realize that they are pregnant, it is important to understand the risk to the fetus if women of child bearing potential are going to use the product in the OTC setting

15 Joint NDAC/EMDAC Meeting January 13, 2005 Did Users Know Their Cholesterol Values? What did Consumers Think Their LDL-C Level Was LDL-C (mg/dL) Measured at Purchase Visit Total Missing< to 170>170 Missing Unknown < 130 mg/dL mg/dL > 170 mg/dL Total

16 Joint NDAC/EMDAC Meeting January 13, 2005 Did Users Know Their Cholesterol Values? What did Consumers Think Their LDL-C Level Was LDL-C (mg/dL) Measured at Purchase Visit Total Missing< to 170>170 Missing Unknown < 130 mg/dL mg/dL > 170 mg/dL Total mg/dL Missing Unknown 130 to 170 < 130 mg/dL mg/dL 265

17 Joint NDAC/EMDAC Meeting January 13, 2005 Summary of the Users’ Knowledge of Their LDL-C Values at the Initial Visit 30% (318/1059) did not know their LDL-C 47.7% (505/1059) correctly identified their LDL-C value 71% of Users who correctly identified their LDL-C <130 mg/dL chose to use Mevacor OTC 75% of Users who correctly identified their LDL-C >170 mg/dL chose to use Mevacor OTC

18 Joint NDAC/EMDAC Meeting January 13, 2005 Did Users Meet the Label CHD Risk Factor Criteria? Risk Factors for CHD: Smoking Age –> 45 years men –> 55 years women Family history of CHD Hypertension Low HDL-C Users with > 2 risk factors (Age + > 1 risk factor) 57.3% Users with < 2 risk factors 42.7%

19 Joint NDAC/EMDAC Meeting January 13, 2005 Sponsor’s Definitions of Correct Self-Selection Original Definitions AL: According to Label –entirely consistent with label NAL-MASM: Not According to Label, Medically Acceptable for Self- Management; i.e., a favorable benefit to risk ratio (achieve LDL-C goal at 6 weeks) Modified Definition (a physician override) AL-MASM: According to Label, Medically Acceptable for Self- Management –AL and –not AL but consulted with a doctor

20 Joint NDAC/EMDAC Meeting January 13, 2005 Sponsor’s Additional Analyses of Correct Self-Selection Closely adhered to the label (post-hoc definition) –Outside age criteria –Absence of label risk factors –LDL-C < 130 mg/dL –LDL-C > 170 mg/dL –HDL-C > 60 mg/dL But: –Knew their lipid profile –Did not have elevated triglycerides –Did not substitute Mevacor OTC for a prescription lipid lowering medication, and –Did not have diabetes, heart disease or stroke

21 Joint NDAC/EMDAC Meeting January 13, 2005 Sponsor’s Additional Analyses of Correct Self-Selection (cont.) Failed to Closely Adhere to Label Benefit Criteria But Eligible for Statin Therapy (post-hoc definition) –Did not know their lipid profile –Had elevated triglycerides > 200 mg/dL –Substituted Mevacor OTC for their Rx medication –Had diabetes, heart disease, or stroke But : –were eligible for statin therapy by ATP III based on calculated > 10% 10-year risk for myocardial infarction or coronary death

22 Joint NDAC/EMDAC Meeting January 13, 2005 Sponsor’s Results: Correct Self-Selection Self-selected AL-MASM484 –Without physician override (AL) 68 –With physician override (MASM) 416 Closely adhered to label202 Did not adhere to label benefit criteria 357 –Eligible for statin therapy 258 Total944

23 Joint NDAC/EMDAC Meeting January 13, 2005 Users with Relative Contraindications for Using Mevacor OTC According to Label No risk conditions (42.3%) > 1 risk condition (55.5%) Not known (2.2%)

24 Joint NDAC/EMDAC Meeting January 13, 2005 Users with Relative Contraindications Who Did Not Consult a Physician ConditionTotal Users Did Not Consult Doctor History of previous muscle pain while on statin 8653 (61.6%) History of stroke 3116 (51.6%) CHD 8937 (41.5%) Diabetes (41%) Taking potentially interacting drugs 3212 (37.5%) High LDL-C or TG (64.5%) Substituted for prescription lipid lowering medications (37.5%)

25 Joint NDAC/EMDAC Meeting January 13, 2005 Decisions Regarding Continuation of Therapy Total Users N=1059 No Follow-up LDL-C test? N=393N=666 Continued treatment? Yes No Yes N=277N=116

26 Joint NDAC/EMDAC Meeting January 13, 2005 Decisions Regarding Continuation of Therapy Total Users N=1059 N=666 Yes Discontinued Continued N=7 N=659 Follow-up LDL-C test? 375 LDL-C <130 mg/dL 60 LDL-C unknown; continued w/physician advice 30 LDL-C >130 mg/dL; continued w/physician advice 34 LDL-C >130 mg/dL; discontinued 160 LDL-C unknown or >130 mg/dL; continued 160 LDL-C unknown or >130 mg/dL; continued

27 Joint NDAC/EMDAC Meeting January 13, 2005 Achievement of the LDL-C Goal at the End of the Study 548 of 878 Users with known LDL-C value had LDL-C < 130 mg/dL at the end of the study –160 with LDL-C < 130 mg/dL at baseline –39 LDL-C level at baseline unknown –349 with LDL-C > 130 mg/dL at baseline

28 Joint NDAC/EMDAC Meeting January 13, 2005 Safety Data 17% of Users had drug-related adverse events –1 serious allergic reaction to lovastatin – no other serious drug-related adverse events

29 Joint NDAC/EMDAC Meeting January 13, 2005 Summary (Cholesterol Knowledge) 69% of Purchasers needed more information to make a purchase or use decision 47.7% correctly identified their LDL-C 33% of Users did not know their LDL-C at the initial visit

30 Joint NDAC/EMDAC Meeting January 13, 2005 Summary (Self-Selection) 37% of women Users were < 55 years of age 26% of Users met the age and baseline LDL-C level mg/dL 19% of Users met the age, LDL-C and risk factor for CHD criteria 10% of Users met all label eligibility criteria without a physician override

31 Joint NDAC/EMDAC Meeting January 13, 2005 Summary (CHD risks and contraindications) 42.7% of Users had <2 CHD risk factors 55.5% of Users had >1 relative contraindication according to the label for the use of Mevacor

32 Joint NDAC/EMDAC Meeting January 13, 2005 Summary (Follow-up LDL-C) 63% of Users had a follow-up cholesterol test 35.6% of Users achieved the LDL-C goal on their follow- up testing Median reduction in LDL-C in the User population was 21% 548 (62%) of Users with known LDL-C value at the end of 6 months had an LDL-C <130 mg/dL –199 Users started at an LDL-C <130 mg/dL or had missing baseline LDL-C

33 Joint NDAC/EMDAC Meeting January 13, 2005 Summary No new serious safety signals during the study Based on the CUSTOM results, it is likely to be used by: –Women of childbearing age –Consumers with contraindicated conditions –Consumers with no risk or low risk for CHD –Consumers at high risk for CHD