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Philip Morris

Deadly Overcaution: FDA's Drug Approval Process

Date: Aug 1990
Length: 19 pages
2046936840-2046936858
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Kazman, S.
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NICOLI,DAVID/OFFICE
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CHAR, CHART, GRAPH, TABLE, MAPS
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W6
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Harris
Kefauver
Kelsey, F.
Kennedy, D.
Schmidt, A.
Wardell, W.M.
Young, F.
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Stmn/R1-072
Stmn/R1-079
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2046936725/2046937271/Missing
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Council of Economic Advisers
FDA, Food and Drug Administration
Genentech
General Accounting Office
Nas, Natl Academy of Sciences
Natl Heart Lung + Blood Inst
NCI, Natl Cancer Inst
Neurologic Drug Advisory Comm
Office of Management + Budget
Pharmaceutical Mfg Assn
Science
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Wall Street Journal
Buffalo Law School
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Cornell Univ
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Competitive Enterprise Inst
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Journal of Regulation + Social Costs
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NUi7 1G 74 1( • i 1 r. i I. ~vrtF -~n r- , --- Journalff-~Reguta~',c Social Costs • • W hen the federal Food and Drug Adminlstration amounces lts approval of an Important new drug, ft event Is Invariably portrayed as an administrative achievement. this has always puaied me. It seems that a questton hangs over these announcements ttiat almost atways goes unasked, though I understand why FDA might not care to answer It. The question Ls this: If a drug that hos just been approved by FDA wi11 start saving lives tomorrow, then how many people died yesterday walting for the agency to act? 8y'yesterday" I do notJust mean the day before; I mean the two to three years that It generally takes FDA to approve a New Drug Application (NDA). Under federal law, no new drug can be marketed In this country until FDA approves It as safe and effective. FDA makes its tlrxling on the basis of the manufacfurer's NDA, wNch may contain over 100,000 pages of data from clinfcal tests that took from two to ten years to complete. During all this time the drug is unavailable to physicians and the public, except on a very Gmlted basis as part of some clfnical trial. FDA, of couuse. Is not the cause of all clinlcai testing; much of !t !s a necessary part of drug development and woWd occur even In the absence of FDA reguiation. 8ut It Is cleat that these reguiations have made the development of new drugs signUtcantly more expensive and time-comm(ng. Studies Indicate that FDA's requirements have more than doubled development costs Sam lca=an is Cemral Caunsel aE eta ca~cicsvs Dv=Kie Inxitue, a fne mt~c®c a&4a=y or3anizatSon headguare4red in Wshington, DC. M:. lcaur,an Ss agmdues oftoazLl Lhit=ity ard =/8uff4o Iav Sd=L Pie Ms lnag beea as.tK sap.inLto srr~ law, W+z; rq lttpz;eztyri4ts uz3 halch ard ss.fEty =9Lts=. 31
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• • • HUz 1G 74 1 r • 1G r. il. ~.~r[r~,mrn , i_ i number of healthy subjects (uv.,ally under 100). Phase 2 tests study effecttveness as well as side effects, and generally InvoNe several hurxired subjects dtvided Into treatment and control groups. Phase 3 testing examines more detailed issues such as optimal dosage and Involves hundreds to thousands of subjects over muftFyeor periods. Under the 1962 amendments ail clinicai (I.e.. human) testing of new drugs, and of prevlously approvecf drugs being studied for new uses, must be cleared In odvance by FDA under Its Investigational new drug (iN0) procedures. FDA approval of.an IND application to begin clinicapy testing a new drug Nnges on such factors as the adequacy of pre-clin{cai (anlmaf) testing, the details of the proposed test plan and the rissc to which human participants wilt be subjected. Even after they are underway, approved teshs can be hclted lf FDA subsequently becomes dlssattsfied with them. FDA's powers were expanded In other ways as well. Under the 1938 act NDAs were automaticoly approved unless the agency denied them. Under the new low it is disapproval that Is automattc; for an NDA to be approved FDA now has to make an afflrmative fincSing of safety and ef8cacy. Moreover, the cialms that a manufactvrer can make for a drug are 6rNted to those approved by the agency for the drug's 4abel. 1he 1962 amendments fundomentally changed the nature of both the agency and the drug development process. 'FDA shifted after 1962 from essentlaRy an evaluator of evldence and research findings at the end of the R and D process to an active participant In the process itse4f,'2 producing a transfer of 'primary decision-making authority In pharmaceuticals from maricet mechanisrns to a centrolized regulatory authorlty.'' MORE GOVERNMENT, FEWER NEW DRUGS WhBe tne 1962 amendments were aimed at protecting pubiic health, it graduaily became evident that they were sarlousty restrScting pharmaceutlcal Innovation In this country. 8stween 1962 and 1967 the average review time for an NDA more than tripled, rEsing from seven months to ttbriy months.• Despite numerous ciaims of FDA, streamlWng In recent years. NDA review time has not Improved, and ended the 1980's at over 32 montts per appiicatton.s 33 r
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AZ1G 12 '94 17: 11 P.M.COkrUKh ivn S • • 32 for approved drugs and have substantially reduced the rate at which new drugs are Introduced, creating a large log In the avaqablpty of new drugs In this country as measured against comparable foresgn countrles.' Whlte FDA's defenders dispute the magnitude of these impacts, their essentlal argument Is that these effects are far outweighed by the protection that FDA provides against unsafe and Ineffective drugs. Their arguments Inevitably go bock to the event that led to the present day FDA and that Is paradigmatic In any discusston of drug regutatory pol}cy-thalidomtde. ' THAtIDOMIDE AND THE EXPANSION OF FDA 7-sdkiomide was introduced In Germany In 1957 as a sedattve distingtQshed by {ts nontoadcity. It was eventually sold In over 40 co+.ntries before its link to severe birth defects became apparent. In the United States approval for thafidomide, requested In 1960, was withheid by its FDA reviewer. Dr. Frames Kefsey, while she Investigated reports Mat the drug caused peripherai nerve damage. In 1961 news of trialidomide's fetal effects led to the drug's withdrawal from the world market. Because of Dr. Kelsey's actions the drug was never sold In this country, and the US was largely spared the thousands of birth defects that occurred abroad. Dr. Kelsey received the President's Gold Medal for Dlstinguished Service for her work. The ttsaffdornide catastrophe was the catayst for a major expansion of FDA's powers In 1962 under the Kefawer-Harris amendments to the Food. Drug and Cosmetic Act. The earlier statute, enacted In 1938, had prohibited the markettng of new drugs until they were found to be safe by FDA. The 1962 amendments added a new requUement-drugs wouid now txYve to be found to be both safe and effectfve before they couid be Introduced. This was Ironic. because the threat posed by tholidomide was one of safety, not eftlcGcy, and FDA's review powers under the 1938 act had succeeded In barring it from the American market. The 1962 amendments also gave FDA far greater power over human testing of new drugs. CM1cal iriats of new drugs are generally performed in tEvee stages: Phase 1 tests are aimed at obtaining basic data on drug toxicity and side effects, and are usually conducted on a srnan
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HU~7 1G 7~+ 1 f • 1G r. i i. ~ vM rvi-1, n i y- i a a The hlgher standards for NDA approval under the new law led to an Increase In manufacturers' pre-NDA Investigatlonal work as wetl. The total development time for a new drug, whEch averaged from 4 to 6 years In the earty 1960's. has now doubled to ten years.° (See Chart 1. page 35.) Development time 1s not the only factor that has worsened. The number of new drugs under development In the US declined as well. From 1975 to 1979 the number of naw domestically developed drugs that entered human testing for the first time dropped to half the rate for the ' preceding decade. According to one study of thts decline the most common explanation gfven by the Industry people wos that severe scientlAc and pooffcal pressures were exerted In the mid-1970s on the Industry's pre-ciinicol research. The Increased FDA requirements were for more tests...and. perhaps more lmportontty, for large Increases In the detall, standards, and documentatton of the tesflng...One Indust:y manager sald that the simultaneous lncrease In...standcrds and attacks on partlcular drugs caused many Industrlal loboratories to vfrtuolly cease reaeareh on new drugs and to dvert their resources Into auditing their old data instead of working on new INDs...' The most dramdtic evidence of the effect of the 1962 amendments Is the shlft in drug Irnovatlon leadership between the US and Great Britain, which has scfentiflc and medical standards comparable to ours. In the period Immediately following the new low, before Its full effects were felt, the US led &italn In new drug Introduction. For the mutually available drugs (that Is, drugs ovallable In both countries) that were Introduced between 1962 and 1965, the US had, on average, a sJx month lead in being the country of first Introduction. However, from 1966 to 1971 Great Britain took the lead; on average, muttlalty ovoilable drugs were introduced 15 months eartfer In Brltaln than In the tJS! Brfitain had a similar lead In exclusively avaIIable drugs-that ts, drugs Introduced Into only one of the two countries. Of the 98 drugs that become exclustvely CvaBable between 1962 and 1971, 77 were Introduced tirst In Brltaln ° The most recent report on these trends shows that
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HU(M 1g~ ':;4 ir•L:, r. . -,,, • Drug Development and Approval Process Precliniccl Testing YEARS 1 2 Test Laboratory and Animal Population Studies P U R Assess safety and P biological activity 0 S E % of all new dfugs that poss • S F I L E I N D Phase I Phase 1! Phase IlI 3 a 5 6 7 8 20 to 80 Healthy 100 to 300 1,000 to 3,000 Volunteers Patient Volunteers Patient Volunteers Evaluate Verify effectiveness Determine effectivenessm monitor adverse safety and Look for side reactions from dosage effects. long-term use. E:pedeed Rev4e.~ Pt~oses II ond Ip cornbined ro snort.r apprava! Process on row rn®dlcInes for setous dc Vte-threateryng dlseates. 70 % of 33 % of 27 % of INDs INDs INDs FDA N D A Approval 9 10 Post-marketing sofety monitoring Review Large-scale manufacturing usually takes about 2 to 3 years Distribution Education 20 % of INDs From: Pt~crmaceutico! Manufactuxers Asociotton. NewOtug Approvals In 1989. 35 ft talcos c decade on overaga for an exasrfrnentai ctn4 to trQVei from sab to rnediolro ctumt. Or+l~+frve In 6,U00 coniC}ounds aUe®ned fn precLrice} testir+g rnoke It to humon teetfng, Ora of these fiv® tasted in peop~ 6 opproved.
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• • • HUb 1G :-, ii i.r r., , .- " - .,, 36 they have continued through the 1980s, From 1977 to 1987, 204 new drugs were introduced in tt~e US; of these. 114 were available In Britain, with an average leadtlme of more than five years per drug. On the other hand, of the 186 new drugs fntroduced Into Britain during this period, onty 41 were already avallable In the US and then only by an average of two and a half years. As for exclusfvey avaBable drugs, ttsere were 70 In Britain but anly 54 In the US. The greatest lag tvnes for the US were In the areas of cardlovascuiar, respiratory, central nervous system and cancer drugs.10 .' Just as alleged FDA reform has had no effect on NDA review time, It has simllarly faded to reduce US drug lag. Average Brftlsh {eadtfine in the second half of the period studied above, between 1983 and 1987, was as large as It was in the first half. The studys authors conaluded that Important drugs sntl become avallable Iarer fn the UNted Stotes, same much later. than In the UrUted fQngdom. This ls true both for drugs representing importantrherapeutlc gains, as well as for those representing modest or uttte gains. Moreover, me smaB dtference in safety dscontinuatlons In the two countries does not support me argument thar delaY protects the pubflc from serious unforeseen aaYerse effects." THE INVISIBLE RESULTS OF INEVITABLE BEHAVIOR There are two basic types of errors which a drug regulator can make: the t[rst ts to mistakenly approve a drug which later tums out to have serious adverse side effects; " second type of error i,s to mistakenly reJect, or even dek7y in approving. a beneficial drug. From a public health standpoint, both types of errors are equaly serious In nattue, because both will lead to the uruvcessary loss of qfe. Overcautian in approving a needed drug can be Just as deadly as lack of caution In approving a bad drug.'2 The ft.ndamenta( problem at FDA Is that It is overcautious In approving new drugs. This does not stem from Its budget or from staff morale or from the individuals appointed to run it; it !s a problem that ls Inherent In the agency/s political nature, which makes tt a creature of congressionai oversight and mada pressure. The thalidomide tragedy, the source of FDA's current powers,
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• • has become the guldIng model for the agency. Every new drug Is potentially another thalkiomide. From the FDA commissioner to the bureau heads to the lndividual NDA reviewers, the message Is clear: If you approve a drug with unanticipated side efiects, both you and the agency wu face the heat of newspaper headanes, teievlslon coverage and congressJonal hearings. On the other hand, it FDA (nslsts on more and more data from the marwfactvrer, and 1lnaily approves a drug which should hcve been on the market months or years before, there Is no such price to pay. Drug lag's victims and their families will hardly be complaining. because they won't know what hit them. They do not know what INDs and NDAs Ys waiting for approval at FDA, nor do they follow pharmaceutical news from abroad or progress reports on cUnlcal trtals. (Unless, that ls, they are strftlciently lucky, rich or politically connected to get Into such a trlal.) They only know that there Is nothing their doctors can do for them. From the standpoint of media and polittcs, they are Invisible. As former FDA Commissioner Afexarxier Schrnidt once stated, In all of FDA's hlstory. I am unabfa to fund a stngle instance where a Con9ressionai comrnittee Investigated the fallure of FDA to approve a new drug. But, the tlmes when heorinfls have been held to critic'sze our opprovai of new drugs nave been so frequent tt'1ot we aren't able to count them...The message to FDA staff could not be clearer. Whenever a controversy over a new drug Is resoived by Its opprovd, the Agency and the Individuals involved likefy will be Inve.stigated. tNhenever such a drug Is disapproved, no Inquiry wlll be made, The Congressional pressure for our negatlve octton on new drug opplicatlons Is, therefore, Intense, And rt seemsto be {ncreasfng..." The clinical research director of a major pharmaceuticat company Involved ln Alzheimer's research put It more directly: There won't be any breakttirough products out there because every tlme the trials run Into setzure or liver enzymes, the risk will be emphostzed and me benefrt w11 be Ignored." Similar sentiments were expressed by offlcials of the 37
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S 38 National Cancer institute. who accused FDA of being 'mired 1n a 1960s pNiosophy of drug develoQment, viewing aU new agents as...polsons.' 1a The poiSttcal lnvistbiitfy of drug !ag's victGrs fs the major reason for FDA's Inherent overcaution In approving new drugs. Caution may soumd like a good ttzing when !t comes to public health, but there are times when overcauflon can be deadlier than lack of caution, which is why we do not elaborately stress-test a rope before throwing it to a drowning man. A stark example of FDA's skewed treatrnent of risks and beneflts Is the agency's ten year delay (from 1967 to 1976) In approving a variety of beta blockers to reduce heart attacks. FDA Cammissloner Donald Kennedy defended thts delay as follows: A major reason...was the suspidon that a number of B•btockers might be turnorl9enic, and the resulting (FDA3 requirement that long-term anlmcl studies be undertaken to Investlgate this posslbilfty.,,lt (now) appears that certain B-bockers are poteMital tumorigens,,,Slnce B•blockers (are) Intended for fong• term use In c great many patients. the FDA't...decision to require long-term carcinogeNc• effecttesting before dinical use spared patfents In the US a potentlally dangerous kind of ezposure.`• But to Dr. William M. Wardell, a major scholar of drug reguiatlon, this's a very minor side of the story: The proper use of (the 8-blocker) practolol...couid now be saving 10.000 aves each year In the US at a cosi. In terms of side effects, that con now be made trivlal by comporison,..These important advances ore whot Dr. Kennedy trlumphantly takes credit for 'protecting' us from; the concept of risk avoidance has been turned pytrhicauy on Its head. In addNion to 'saving' tne US from the on/y drugs that had. up to 1977. been deftnitely shown to reduce postinfarctton mortality, the FDA's B-blocker policy has set bac~c ccralovascular therapy (n thls country by years. At a tSme when the frontiers of B-blocker research throughout the world hod moved on to the questlon of preventk)g coronary death and reinforctton. economic, clinical, ond Intellectual resources of born the FDA and Industry in The US weM Into reexamining... efflcacy and toxiclty.,,(about •
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• • • whtch tne answers were alreaW wen known,,,); this sclentiAc wheet-spinning fasted for approxlmatefy seven years..." FDA's act'ion may make little medical sense. but unfortundtely it makes perfect political sense. In terms of congressional reaction and media covera9e, the post- approval discovery that certain beta blockers induced tumors would have been devastating to FDA. Even a score of unanticipated deaths from a new drug ore enough to set Congress off," whtle the loss of several thousand iNes due to a delayed approval has practically no political impact. FDA's skewed Incentives have other results as well. When the agency belleves that satisfactory treatment for a certain iilness is already available, new drugs for It will frequently have to pass an even higher standard of proof. Treatments thus tend to become frozen at levets that are only moderately successful-after all, why take a chance on something new when the old Is adequate? (,Ar)d If the new drug has some unrealFzed potential, who'll complain about its absence?) The possibility of unapproved use can also become a back-door factor In the denial of on NDA. L.evamisole, for example, has recently shown such great promise In treating colon cancer that FDA is permitting its distribution while clinical tests are stili underway. The original levamisole NDA, however, filed In the early 1970's for its use as an anti-worm drug, was never approved by FDA. The ofiicial reason was that adequate anii-worm agents were already avaUable. The real reoson oppeared to be concern that levamisole would be put to unauthorized use against cancer, since reports of the drug's immunity-booating effects were already circulating at that time.19 ThLS, yet another revolutionary drug turns out to be a breakthrough in twreaucracy rather than in medicine. RU-486, the new French obortion pili, may meet a simliar fate. Its consideration by FDA will undoubtedly be mired in the abortion debate. The drug, however, has also shown promise against brain and spinal tumors-uses which will be submerged by pollt4cal opposition to Its availability. The FDA process has also created a regulatory structure which benefits certain segments of the pharrnaceutical industry. Large, established firms have 39
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• • developed an expertise In dealing with FDA that probably accounts for a good part of their capital value; they are also able to spread the costs of FDA compllance over a large product ljna. For new enfrants In the fleld, on the other hand. FDA regulation Is a sizable competitive barrler.70 AIDS AND THE ILLUSION OF FDA REFORM The major exception to drug log's invisibility has been the A1DS crisis and the emergence of a nationwide network of AIDS activist organlzatlons. More than any , ottser public health Issue, AIDS has highlighted the grotesque consequences of FDA policy. It has presented the spectacle of federal officials denying unapproved drugs to incurably llI people on the ground that the denlal Is for their own good, while AIDS victims and their supporters resort to drug smuggHng In order to preserve their dignity and autonomy. The October 1988 AIDS demonstration at FDA headquarters marked the rlrst time that the agency has been physically conftonted, en masse, by Ita victims. The AIDS crtsis has sparked a number of minor reforms. Access to experimentai drugs has been made sllghtly easier through such new procedures as -treatment INDs' and 'paraNel tracking,' under which promising drugs can be used for treatment before they receNe flnal FDA approval. FDA is allowing the limited Importation of unapproved foreign drugs by indivlduals (though at the some time, paradoxicalty, these some drugs still cannot be legally obtained from domestic manufacturers). The agency has begun to accept test data on experimental dnlgs from community-based programs, a signiAcant departure from ttie centralized ciinical trials that were previourty an absolute prerequisite for FDA approval. These changes sound Impressive, but they are only the latest In a long series of agency reforms that have failed to sigrdfkantfy Improve drug regulatfon. in 1975, for example, the agency began a 'priority review' to speed the approval of promising new drugs. 7rits fast-tracking has had some apparent successes-AZT, for example, the only drug yet approved for treating AIDS, went through the NDA process In a recordbreaking 107 days. Nonetheless, fast-tracking deperxfs on FDA's alieged abiqty to pick winners In advance-a clairn that Is as ublqultous among
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• • • government planners as it is unsupported. Conslder this account of FDA's 1978 approval of vafproote sodium for treating epilepsy: Athough this drug was acted on with alacrtty in the glare of unprecedented publlctty ir+the flnat stages leading to Its NDA approval.,,lts early hJstory is not one of speed..7he 1ND sNdy on this drug was submftted In December 1974, bywhich tlme The drug had been marketed abroad for severat years and was afready recognt[ed as a drug of choice for certaln types of epilepsy. Nevertheless, the FDA's classitfcotlon system assigned tt to class $ (l.e., not meriting the fast-tTock treatment}, tt was not untA October 1977 that the drug was first referred to the FDA's Neurobglc Drug Advisory Committee. The fact The the FCA's system failed to recognizs The importance of on already- marketed drug of cholce does not moke one sangulne about the FDA's claimed abllityto Identify Important new drugs even earller, I.e., at the investfgational stage-before a drug's therapeuttc potential can be predIcted by anyone-when tne research process Is most svsceptiVe to Inh(bitory reguiotfon.3' Just as the AIDS cris£s has not produced any fundamental reform of FDA, It has also not improved the media's urxierstanding of the agency's role In drug development. Most FDA actions are not agency accompfishments; they ore the termination of FDA restralnts on private accomplishments. Despite countless storles on AIDS protests, drug smuggling and underground testing, however, reporters continue to get this simpfe fact wrong. In eariy 1990, for example, FDA allowed AZf's manufacturer to halve the drug's recommended dosage, a very significant step given AZf's high cost and toxicity. The dosage cut, however, was almostuntversally reported as an FDA achievement, despite the fact that ag the agency had done was to approve a request mode by the manufacturer several months earf(er.22 The recent FDA reforms, moreover, are jeopardzed by new moves to tighten the drug approval process. The generic drug scandal, In which certain firms were found to have bribed FDA staffers to delay their competitors' NDAs, has created a leglslative backlash to the little deregutatfon that FDA has accomplLshed. 41
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• • • I' Simllarfy. the General Accounting Office recently reported that more than hdf of the drugs introduced In 1976 to 1985 hod side effects that were dlscovered only after they had been opproved?' In Its demand for pte-approval omnlscience, of course, GAO totally {gnores the extent to which a more elaborate NDA review process would further delay new drug approvaF-an inexplicable approach, especially since GAO Itself has criticized FDA's slowness." GAO's new report, requested by a leading congressionai advocate of stricter FDA regulation, has become another supposedly weighty argument against FDA reform. The AIDS crisis became an exception to drug lag's Invisibllity because of gay political power. Hod those at risk for A1DS been less organized, as Is the case with victims of most critical diseases, the ava0ab4ity of AIDS treatments would be a fractton of Its current level. This may be the way politics works, but It is not the way medicine should worsc. PUTTING SOME NUMBERS ON THE FACELESS FDA claims to assi.ue drug safety and efftcacy. Just what these qualities are, and whether government Is in fact necessary for their assurance, are debatable questlons. But regardless of how we ultimately answer them, we should have some handle on what FDA's drug approval regime costs us. After all, when a salesman tells you that his product is absolutety essential, It usually Is not a bad Idea to ask the price. FDA's S100 million drug review budget 1s the most obvious component of this price, but It Is also the most mtnor. The major cost Is the invWb1e one-the therapeutfc benefits of new drugs that we lose while these drugs are under revlew. For example: Misoprostol and Gashic Ulcer Bleeding In December 1988, FDA announced Its approval of rnisoprostol-the first diug to prevent the gastsic ulcers thQt ore caused by asplrin and other nonsteroldal antt- tnftammatory drugs CNSAtDS?. These medications are frequently taken In large doses by arttuitts sufferers, and the gastric ulcers whlch frequenty reault undetected from their use cause 10D00 to 20A00 deaft each year through Internal bleeding and other compiications. Misoprostol Is reported to produce a 15-fold reduction In these gastrk
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• uicers, and its life-saving potential led FDA to give its hlghest therapeutic potenttal rating, tA, to the drug's NDA26 The NDA was approved by the agency In a relatively rapid nine and a half months. Nonetheless, by the lime the drug was approved In the US It was already available In 43 foreign countries, In some of them sirzce 1985. In a press release accompanying the misoprostal approval, FDA Commissioner Frank Young stated, 'ltfits drug should save lives as well as costly hospitalizations.' Thus, the question with which this article begon-if a new drug will save lives after its approval, then how many lives were lost while It was being reviewed? This Is but one aspect of the drug lag that has been discussed above. It does not measure FDA's burden on pre-NDA development time. On the other hand, It avoids the complexity of International comparisons by focusing on a distinct time period during which a drvg's unavailabbity Is clearly FDA's doing--the period that begins with the flling of an NDA and ends with Its approval. Moreover, this approach Is similar to that tnicen by many federal agencies In publicizing the hazards of toxic substances and other health periis. Why not treat the hazards of FDA regulaflon In the same way? The calcuiatlon for misoprostol would be as follows. If the drug Is, as reported, 94 percent effective and If, as FDA estimates, there are 1QA00 to 20,000 gastric ulcer deotr-s annuafly due to NSAID use, then misoprostd potentfany couid have saved 8= to 15DC0 lives during FDA's nine and a halt month review perlod. This past-approval audit is admittedly Inexoct. Misoprostoi may never reach all of those who rNght beneflt tram it, and It certainly did not achieve such widespread use in Its first months on the market. On the other harxt, misoprostol's marketing was on hold for the full duration of FDA's review period; whatever level of use mtsoprostol reaches a year from now, we can assume that same level would have been reached Nne and a half months earlier were it not for thLs FDA review. In short, 8,000 to 15A00 lives ts a fair starting polnt for calculating the cost of FDA's review of mtsoprostol. FDA can come up with tts own flgcxes If It disputes this, but at least let It come up with something. Had Frank Young 43
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• • • announced that 'misaprostoi will save lives, but we did lase several thousand people wtllie FDA went over the manufacturer's paperwork,' the publIc's perception of the agency might have undergone a rather fundamental shlft. As usual, however, the drug lag angle did not appear In coverage of the misoprostol story. Its approval was reported as a triumph of rapid admlrIstratNe action. Its manufacturer. pieasad with FDA's speed, was not about to antagonize the agency that controlled its Iivelihood. Those who might have been saved had the drug been available earlier rested in peace. Thrombolytic Therapy for Heort Attacks Drug lag was a more prominent Issue In FDA's 1987 approval of thrombolytic (ciot-dissolving) therapy for heart attacks, but it was stin ultimate(y skirted by the agency. In November 1987, FDA approved streptokinase as the first drug which could be Intraversously administered to reopen the blocked coronary arteries of heart attack victims. Streptokirlase had been shown to reduce Irr hospitol morta0ty among heart attack patients by 18 percent. In the US approximately 700,000 heart attack patients are hospitolized annually, of whom 9 percent dle !n-hospitai. Thus.streptoidnase couid potenttaUysave 11 A00 of these Uves each year. FDA's approval of thts use for streptokinase come a full two years after Its NDA was flled, which means that ?2AOQ deaths might have been prevented In the Interim.'6 Even after an FDA ad,risory committee recommended approval of the NDA in May 1987, It stilE took the agency six months to is,we its dec151on. The streptotcina.se approval was overshadowed by the agency's handling of TPA, a genetically engineered thrombolytic agent that appeored to be even better than streptoklnase. in 1985 the Nationai Heart, Lung and Bload li%stitute (NHLBI) hod obrupty halted a study cornporing the two drugs because TPA appeared to be so much more effective that Its resecrchers decided they could not ethically wlthhold TPA from any of their test sub;ects. TPA's rnanufacturer, Genentech, Aled its NDA in April 1986. At Its May 1987, meeting however, in a deciston th,at sturted many observers, the same FDA advisory committee that recommended approval of streptokinase voted against the TPA application. The committee was
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• satisfied that TPA was effective In dLssolving clots, but It wonted mortality data os well-#zat fs, statistics showing that TPA-treated patients survived longer than untreated patienfs. Amorg Me committee's concerns was the Incidence of strokes that had occurred among some TPA patients. In short. while the HHL61 researchers viewed TPA's unavailability to some of their trfal subjects as so medkafly unethical as to require premature terrttiination of their study, the FDA advisory committee recommended that the drug be wit'nheid from the entire nation. . The advisory committee's recommendation was heavlty criticized in certain quarters. The Walr Street Journal ran a series of articles and editorials which ttxiicated that much of the dispute over TPA stemmed from a Jurisdictionci dispute between two FDA bureaus, one responsibie for drugs, the other for genetically engineered products. Science, one of the worid's most respected scientific Journals, editorfalized that when a regulatory agency Thor ncenses drugs tor heart attacks stumbies. It may nave not only egg on Its face but blood on its nands..A drug That dissolves blood clots shouid no longer have to answer wherner such an actfon prolongs rife n FDA did tfnally approve TPA shorfty atter It acted on the streptokinase NDA. By that time TPA was availabie In eight other countries, among them France. Auslria. New Zeoland and Germany. At his press conference announGng the approval, Commissioner Young brushed aside criticism of FDA's delay on TPA as the work of stock specuiators, stating that 'to be able to clean out on artery but at the some time produce a massive stroke would not be a very good resut.' To eat chicken but at the same time choke to death on a bone would not be a very good resutt either. it Is also a sitawman proposition. A bad outcome Is meaningless uniess we can weigh the likelihood of Its occurrence against the anticipated benefit of the action. Commissloner Young went on to Irstruct the public on the need for speed in treating a suspected heart attack. 'Don't deny the symptoms. Don't wait' he urged. 'Seek the care of a physician so that you con moke yoursstf available for this type of therapy.' This recommendotion was a far cry from FDA's own approach 45
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• • i° In approv(ng the drug.2' The post-approval audit described above could be applled to any newly approved drug. By puttfng numbers on an otherwise invisible cost of FDA review, such an audit would bring some balance to public perception of FDA's tunction. Ls such an audit feasible? Commissioner Young didn't doubt It when I asked him about this in 1989: 'Yes, I thlnk the bclances can be done. Have they been focused on In that way? Absolutely not.' Would FDA do.such an audit? This got a different' response from the Commissloner: We think that. fn part, th(s is something that should be studled by omers. We do have a job of getiing drugs that ore safe and eftective on the market at a tfine when we con hardly meet our tlme limits as ft ls, though mtis scholarshlp ts very Important?' In short, don't hold your breath waiting for the agency to come out with these numbers. On the other hand. FDA Is not the only organization that could conduct a post-approval audit. Within the federal government such agenGes as the Council of Economk Advisers and the Oftlce of Management and Budget would be well equipped to undertake such an audlt, either perlodically-examining all new drugs approved within a given time perSod-or on the occasion of major FDA drug approvals. Outside groups such as the National Academy of Sciences could perform the audit as well. What Is Important is that the numbers come out. so that FDA's announcements are received by something more than the uncritical applause that usually greets them. ACCESS TO DRCfGS-WITH FDA'S ADVICE, BUT WITHOUT ITS CONSENT A post-approval audit would put needed pressure on FDA, but more is needed if we are to avoid the toll of the current system. Attempts at flne-tun)ng the regulotory process, such as treatment INDs. may produce small temporary improvements, but they Inevitably run Into the brick wa0 of a system committed to playing 1t safe no matter how deadly the consequences. Moreover, FDA's safety and efficacy crlter4a are valued by too large a segment of the public to make their abolition politically
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• • • feas~ble. There Is. however, a simple way to preserve FDA's crIterla whpe eliminating the deadly costs of the current regime: change FDA's veto power over new drugs to a system of certiAcation. Let the agency continue to review safety and efficacy, but allow unapproved drugs, clearly labelled as such. to be availabie by prescription. Under this approach those patients and phy5icfans who wish to be gulded by FDA's Judgments would face no obstacle whatsoever; they could simply restrict themselves, as they do now, to approved drugs. But a crfticaliy m indivldual, faced with the need to go beyond this circle of official approval, could do so under the care of a physJcian. This approach would bring pharmacology in tlne with the rest of medical care, where government approval Is the exception, not the rule. FDA, after all, does not approve surglcal methods, yet we do not worry about podiatrists doing In-offk:e brain transplants. Physlcians prescrlbing unapproved drugs would need good reasons under malpractice low for doing so, especlapy If approved alternatNes were avaUable. Patlents using such drugs would know they were taidng a special risks ur,approved drugs would bear the regulatory equivalent of a skuU-and- crossbones and would be accompaNed by tnforrned consent docurnentation. And If FDA approval Is truy medically valuable, then the use of these drugs would be remain relatively srnaq. Would snake oll be sold? Would patients be conned? Wouid unscrupuious doctors connive with fy-by- Nght drug makers to sell us elixirs that were worthless or worse? Perhaps, but these inequtles already occu, and there Is no reason to suppose that their costs outwcy the advantages of such an approach. In fact their Inc4dence might • well decline as unapproved drugs moved from the medical underworld into leg{flmacy, Just as alcohol poisonings dropped when Prohibition was repealed.'0 It !s the current centrallzed decisionmaking process, wtth Its lnherent b{as, that holds the potential for true catastrophe. Drug safety Is not a hard and fost concept. At the scientific level, It is often the subject of Intense disputes among experts. At the level of personal values and decisbns, therapeutic risks that are acceptable to one person may be out of the question for another. At nelther d7
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• • S Aa level should this be the subject of adminkstrative edict. Drug sofety'can be mevNngfully defined only In terms of indiv(dual choice, not soclety-wide judgments of 'safety and ef>icacy."" Government may attempt to educate us. but it has no buslness Issuing across-the-board mandates on how we should protect our heaith and our lives. We have all seen pictures of thalidomide babies, but we know nothing about the vlctims of FDA's 1 Qyear delay In approving beta blockers, or of Its 2-year delay on ' cordloc thrombolytics, or.of anyy of the other Sags that It has silently caused. fiks imbalance in knowledge is the driving force behind FDA's current drug approval system. That system Is consLstent with neither good government nor good science nor respect for IndNldual liberty and dignity, and It Is time we moved beyond It. .4
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• ENDNOTES • Rh0 foAo%.UtQ on.OmOnq the fcey ttert7Rxe on drUO bQ: S OetriRtion, k1.(7ubfIOrt el PMrmxeurcvlk»owhon(1916): W. 1d Wadel & L lasopraM r4i;vfonon a-,C Avp Gewbpment (197b): Fi G, Grobovsfd & J. M, Vernon, The Rep Jafbn d Phormoceaseaa (19R4). ntt]bowsld 6a V.rnort. swp+a of 4 (1963). sid ~_ Pettanon, svpn n 1, at 16 (197m, 'PT+orrt»eeuticolMarxdactI.;rers.lssoo{otbn. New Onq/pp+ovv§tt 19®9G,1. "GrobowsBJ & verron, st,ta+o n 1. at 3635 'Word.A, May & TAmbb,'Nev Dtup De"bpmeM OV UneeC Stcr.s Pt+amtocw.tcd Fsttn,' 32 Cbs Phv/n A IFw+vp.wlEs A01, 415 (196a, The decir+o rGs founa n's®!- orfpurot®d' rsew d+uprthot b, wmpoutds be'vq tast.d by tt+.lJS rmns that rod developed t)wen The tate ot sesm+q vu0.enwruH nereaseo n " 196os. 4Pettzman. aup o n 1. at 76 tiA+orCef! & LmoqnaL ec,p+o n, 1, at 66b0. '1(a+th. Marttson. Normhqion & Lmopna.'R e Oru;i (aQ An Update of N.w DrLq 4'erOth=brr h the U+vted Stat.s and h the UrtRed I(inacbm, 19771tMOUon 1981; dA CAn. PAmm 4 Trierop.vtta 1y1(1969a l'1d at 13S >sfhesw or. 9.nero0y refered to os Type I onC typ. I ertors See, ..Q., Grai ovsti • Vea+on. +upia n 1, at 9A11 '1s quote0 h GrobowslJ & Vemon, syora tt. 1, at S. '9r. MbhoeI Murphy of ko.chst't7aULseI, os Quoted h'Vlbhifa Fp7b Catb trV FpA'. Wa1 Str.et.bumoL s.prt 29, 1966, of 2IZ wConcer+r-sfnvre: NCS ckuqf umouy aebvea'. Cnkapo 1npune..la-xny 5,1989.014. uf4Medtr. 'A Cal•n Look at ' Drup lap'. 239 ,lA+NA 423, 42S (1976). vVJan,ief,'A C1ose kvpectlon of tne 'CCfm looK; 239 JAMA 20Dd, 2010 (197n s'S®., e, Q., 'Dtup ADprovo! F rt Conp»ss onot Por+ef Isws Scatt, np Report On Ucsrv',nQ of D+up lmpt,eateo h 30 DearRS' WauJVrcn vosr,4eaQn. Juy 21, 1967. ar a, •7l SeMrcrtL 'A't.tLocle' Drup That LoVusFe? Amors9 the Womu'. Wa1 St tselJound, Jt}y 16, 1969, at A22 25" ..p.,'Pfr1s to Speed Apprad of Tect Crvps FIds SmoD Cort+ponies Aparr 6ip Cnei•, woll SheaJou+no( Aprtt 3. 1987, ot 3S irWotdet, suye n. 17. aSeRr 1YpiCd rrOCJfin.3 v+ete •U.S HatW:OosOqO FOr Ai0$ DRp,' (IV®w Yorr rfslt) cr+d 'AZT Ams-Ap6 Medeatbn Cut {n Ho( dy P0&' (ulrohrt7k» rrrrws). Th. oOenfnp me in CneR',er newnprxyrf s Aory b.qan' FDA todatr hd,evd th" roeommona 6w_: (WOstwpron Pos12 Th. WalSrn.rlourds ortiele vo; a notob+. ercepttY+, neodirred 'FCA lefs wolcome Cttt Dotape_' (The stotses oE opDeored fn tt'~ .)ar tay 17, 1990. wds of H," omve newspop.rn) gC'aAO, PCSA Ortp lhi v*,r-POtf ApproW! ?aJV, 1976-65, Apa 1990 (GAQ! PEMD-91>15). &-se GAO. FDA Onip Appmao!-,t (enArnrPzooos TtsorDefoys 1r,eAvotoomy of YsfP+o AoN New LSn:px May 1980 (HQ4-0"11 RG. D. Searte & Co„ Preu ReL.or. DecemLer 27, 196d. wlnromboMVe 1herapy rn)qhrt ewnluoUy go beyond hosplial sae, and 1:. oorrraerea tyy paromaCfes ona otMrs Yn v.iMkret' homef and worYpizef. CJr.-yhNon 474 (19L7). tf Wt.ISd th6B begvm to t9pCh th9 400.LL70 h.art pftoc k viC2iR9 wR10 Cie OMtLay WOA rexnNq o Jwaplral. To the cd.rd tt+at FDA's detoyed oppvvd Imp.d.0 tra unenafen o/ ttwtttbotys's, llt eReat h f.rms of Ms bst b.ven Qt.ol.r, The dnrp bQ eompsAotion for streptokinca. 's t6pluy oompricottro Dy me fact tt+at, to o ve+y cwrued eraerr, tt e dnq vroc awlbble for ttvomboi{tie P,eoR Cnoct tr,erop}r plor to 1967, k+ 1982 FOA opprov.d the drUQ for daaot lryootion hto cotoray, oAolSas. a 49

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