Mipomersen

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Mipomersen
Systematic (IUPAC) name
2'-O-(2-methoxyethyl)-P-thioguanylyl-(3'→5')-2'-O-(2-methoxyethyl)-5-methyl-P-thiocytidylyl-(3'→5')-2'-O-(2-methoxyethyl)-5-methyl-P-thiocytidylyl-(3'→5')-2'-O-(2-methoxyethyl)-5-methyl-P-thiouridylyl-(3'→5')-2'-O-(2-methoxyethyl)-5-methyl-P-thiocytidylyl-(3'→5')-2'-deoxy-P-thioadenylyl-(3'→5')-2'-deoxy-Pthioguanylyl-(3'→5')P-thiothymidylyl-(3'→5')-2'-deoxy-5-methyl-P-thiocytidylyl-(3'→5')-P-thiothymidylyl-(3'→5')-2'-deoxy-P-thioguanylyl-(3'→5')-2'-deoxy-5-methyl-P-thiocytidylyl-(3'→5')-P-thiothymidylyl-(3'→5')-P-thiothymidylyl-(3'→5')-2'-deoxy-5-methyl-P-thiocytidylyl-(3'→5')-2'-O-(2-methoxyethyl)-Pthioguanylyl-(3'→5')-2'-O-(2-methoxyethyl)-5-methyl-P-thiocytidylyl-(3'→5')-2'-O-(2-methoxyethyl)-P-thioadenylyl-(3'→5')-2'-O-(2-methoxyethyl)-5-methyl-P-thiocytidylyl-(3'→5')-2'-O-(2-methoxyethyl)-5-methylcytidine nonadecasodiumsalt
Clinical data
Trade names Kynamro
Routes of
administration		 Injection
Identifiers
CAS Number 629167-92-6
ATC code C10AX11 (WHO)
PubChem CID: 44564107
ChemSpider 24710309
UNII 9GJ8S4GU0M
ChEMBL CHEMBL502097
Chemical data
Formula C230H305N67Na19O122P19S19
Molecular mass 7594.80 g/mol
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  • InChI=1S/C230H324N67O122P19S19.19Na/c1-97-55-278(217(309)256-177(97)231)141-45-131(112(400-141)70-381-422(327,328)442-136-50-146(283-66-108(12)196(302)275-228(283)320)406-118(136)76-387-427(337,338)448-140-54-150(294-93-253-154-191(294)266-214(243)270-200(154)306)409-120(140)78-389-428(339,340)446-138-52-148(292-91-250-151-186(240)246-89-248-188(151)292)407-121(138)79-390-430(343,344)450-169-124(413-204(160(169)373-37-27-363-17)286-59-101(5)181(235)260-221(286)313)83-394-435(353,354)455-174-128(417-209(165(174)378-42-32-368-22)291-68-110(14)198(304)277-230(291)322)87-396-434(351,352)453-172-126(415-207(163(172)376-40-30-366-20)289-62-104(8)184(238)263-224(289)316)85-395-433(349,350)452-171-123(412-206(162(171)375-39-29-365-19)288-61-103(7)183(237)262-223(288)315)82-393-432(347,348)449-168-111(69-298)410-211(159(168)372-36-26-362-16)296-95-254-155-192(296)267-215(244)271-201(155)307)439-420(323,324)384-74-117-137(51-147(405-117)284-67-109(13)197(303)276-229(284)321)444-425(333,334)388-77-119-139(53-149(408-119)293-92-252-153-190(293)265-213(242)269-199(153)305)447-426(335,336)386-71-113-132(46-142(401-113)279-56-98(2)178(232)257-218(279)310)440-421(325,326)383-73-115-135(49-145(403-115)282-65-107(11)195(301)274-227(282)319)443-424(331,332)385-75-116-134(48-144(404-116)281-64-106(10)194(300)273-226(281)318)441-423(329,330)382-72-114-133(47-143(402-114)280-57-99(3)179(233)258-219(280)311)445-429(341,342)392-81-129-176(167(380-44-34-370-24)212(419-129)297-96-255-156-193(297)268-216(245)272-202(156)308)457-438(359,360)398-86-127-173(164(377-41-31-367-21)208(416-127)290-63-105(9)185(239)264-225(290)317)454-436(355,356)399-88-130-175(166(379-43-33-369-23)210(418-130)295-94-251-152-187(241)247-90-249-189(152)295)456-437(357,358)397-84-125-170(161(374-38-28-364-18)205(414-125)287-60-102(6)182(236)261-222(287)314)451-431(345,346)391-80-122-157(299)158(371-35-25-361-15)203(411-122)285-58-100(4)180(234)259-220(285)312;;;;;;;;;;;;;;;;;;;/h55-68,89-96,111-150,157-176,203-212,298-299H,25-54,69-88H2,1-24H3,(H,323,324)(H,325,326)(H,327,328)(H,329,330)(H,331,332)(H,333,334)(H,335,336)(H,337,338)(H,339,340)(H,341,342)(H,343,344)(H,345,346)(H,347,348)(H,349,350)(H,351,352)(H,353,354)(H,355,356)(H,357,358)(H,359,360)(H2,231,256,309)(H2,232,257,310)(H2,233,258,311)(H2,234,259,312)(H2,235,260,313)(H2,236,261,314)(H2,237,262,315)(H2,238,263,316)(H2,239,264,317)(H2,240,246,248)(H2,241,247,249)(H,273,300,318)(H,274,301,319)(H,275,302,320)(H,276,303,321)(H,277,304,322)(H3,242,265,269,305)(H3,243,266,270,306)(H3,244,267,271,307)(H3,245,268,272,308);;;;;;;;;;;;;;;;;;;/q;19*+1/p-19/t111-,112-,113-,114-,115-,116-,117-,118-,119-,120-,121-,122+,123-,124-,125+,126-,127+,128-,129-,130+,131+,132+,133+,134+,135+,136+,137+,138+,139+,140+,141-,142-,143-,144-,145-,146-,147-,148-,149-,150-,157+,158+,159-,160-,161+,162-,163-,164+,165-,166+,167-,168-,169-,170+,171-,172-,173+,174-,175+,176-,203+,204-,205+,206-,207-,208+,209-,210+,211-,212-;;;;;;;;;;;;;;;;;;;/m1.................../s1
  • Key:OSGPYAHSKOGBFY-KMHHXCEHSA-A

Mipomersen (previously ISIS 301012, trade name Kynamro) is a cholesterol-reducing drug. It is an antisense therapeutic that targets the messenger RNA for apolipoprotein B.[1][2][3] It is administered as a weekly injection for familial hypercholesterolemia.

Indications

Kynamro is FDA approved to treat homozygous familial hypercholesterolemia (HoFH). It reduces LDL-C, non HDL-C, and apolipoprotein B. Over a 26 week trial LDL decreased 25%. The FDA decided on a boxed warning of liver toxicity and requires cerfiication by the prescriber and pharmacy.

Mipomersen decreases hepatic and plasma apoB as well as apoC-III.[4]

Chemical properties

The compound is a 'second-generation' antisense oligonucleotide; the nucleotides are linked with phosphorothioate linkages rather than the phosphodiester linkages of RNA and DNA, and the sugar parts are deoxyribose in the middle part of the molecule and 2'-O-methoxyethyl-modified ribose at the two ends. These modifications make the drug resistant to degradation by nucleases, allowing it to be administered weekly. The drug accumulates in the liver, which is convenient since apolipoprotein B predominantly acts there.

The complete sequence is

G*-C*-C*-U*-C*-dA-dG-dT-dC-dT-dG-dmC-dT-dT-dmC-G*-C*-A*-C*-C* [d = 2'-deoxy, * = 2'-O-(2-methoxyethyl)]

with 3'→5' phosphorothioate linkages.[5]

File:Phosphorothioate RNA.svg
Phosphorothioate RNA.

Clinical development

The drug was discovered and developed to Phase 2 by ISIS Pharmaceuticals and subsequently licensed to Genzyme Corporation in 2008 by an auction bid. Isis earned an upfront payment of $325 million, with payments of a further $825 million if milestones are met.[6]

In January 2013, The United States Food and Drug Administration approved mipomersen for the treatment of homozygous familial hypercholesterolemia.[7][8] Launch quantities will be manufactured by Isis at their Carlsbad manufacturing facilities.

References

  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Statement on a nonproprietary name adopted by the USAN council: Mipomersen sodium
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Pollack, Andrew (29 January 2013) F.D.A. Approves Genetic Drug to Treat Rare Disease The New York Times, Retrieved 31 January 2013
  8. ↑ Staff (29 January 2013) FDA approves new orphan drug Kynamro to treat inherited cholesterol disorder U.S. Food and Drug Administration, Retrieved 31 January 2013

External links

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