Bulevirtide

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Bulevirtide
File:Bulevirtide.svg
Clinical data
Trade namesHepcludex
Other namesMyrB, Myrcludex-B[1]
Pregnancy
category
Routes of
administration
Subcutaneous
ATC code
Legal status
Legal status
Identifiers
CAS Number
DrugBank
ChemSpider
UNII
KEGG
ChEMBL
E number{{#property:P628}}
CompTox Dashboard (EPA)
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Chemical and physical data
FormulaC248H355N65O72
Molar mass5398.951 g·mol−1
3D model (JSmol)
  • CCCCCCCCCCCCCC(=O)NCC(=O)N[C@H](C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CO)C(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(N)=O)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(C)C)C(=O)NCC(=O)N[C@@H](Cc1ccccc1)C(=O)N[C@@H](Cc1ccccc1)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](Cc1c[nH]cn1)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(=O)O)C(=O)N1CCC[C@H]1C(=O)N[C@@H](C)C(=O)N[C@@H](Cc1ccccc1)C(=O)NCC(=O)N[C@@H](C)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(N)=O)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](Cc1ccccc1)C(=O)N[C@@H](CC(N)=O)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](Cc1c[nH]cn1)C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](C)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@H](C(=O)NCC(N)=O)C(C)C)C(C)C)[C@@H](C)O
  • InChI=1S/C248H355N65O72/c1-16-17-18-19-20-21-22-23-24-25-38-75-193(327)265-118-196(330)304-205(133(15)316)241(378)295-163(104-188(256)322)224(361)283-152(91-127(6)7)216(353)303-175(122-315)232(369)306-204(129(10)11)248(385)313-88-53-74-182(313)239(376)301-172(107-191(259)325)246(383)312-87-50-70-178(312)235(372)291-150(89-125(2)3)209(346)268-120-195(329)274-154(93-135-56-32-27-33-57-135)217(354)296-168(95-137-60-36-29-37-61-137)242(379)308-83-49-72-180(308)237(374)294-167(111-201(339)340)230(367)286-157(98-140-115-261-123-269-140)220(357)277-148(76-78-183(251)317)213(350)282-151(90-126(4)5)215(352)300-173(112-202(341)342)247(384)307-82-47-68-176(307)233(370)273-132(14)208(345)279-153(92-134-54-30-26-31-55-134)210(347)267-119-194(328)271-130(12)206(343)280-160(101-185(253)319)226(363)302-174(121-314)231(368)288-161(102-186(254)320)225(362)299-171(106-190(258)324)245(382)311-86-52-73-181(311)238(375)293-166(110-200(337)338)229(366)285-156(96-138-113-263-144-64-41-39-62-142(138)144)219(356)290-165(109-199(335)336)227(364)284-155(94-136-58-34-28-35-59-136)218(355)298-170(105-189(257)323)244(381)310-85-51-71-179(310)236(373)292-162(103-187(255)321)223(360)275-146(66-43-45-80-249)212(349)289-164(108-198(333)334)228(365)287-158(99-141-116-262-124-270-141)221(358)297-169(97-139-114-264-145-65-42-40-63-143(139)145)243(380)309-84-48-69-177(309)234(371)278-149(77-79-197(331)332)211(348)272-131(13)207(344)281-159(100-184(252)318)222(359)276-147(67-44-46-81-250)214(351)305-203(128(8)9)240(377)266-117-192(260)326/h26-37,39-42,54-65,113-116,123-133,146-182,203-205,263-264,314-316H,16-25,38,43-53,66-112,117-122,249-250H2,1-15H3,(H2,251,317)(H2,252,318)(H2,253,319)(H2,254,320)(H2,255,321)(H2,256,322)(H2,257,323)(H2,258,324)(H2,259,325)(H2,260,326)(H,261,269)(H,262,270)(H,265,327)(H,266,377)(H,267,347)(H,268,346)(H,271,328)(H,272,348)(H,273,370)(H,274,329)(H,275,360)(H,276,359)(H,277,357)(H,278,371)(H,279,345)(H,280,343)(H,281,344)(H,282,350)(H,283,361)(H,284,364)(H,285,366)(H,286,367)(H,287,365)(H,288,368)(H,289,349)(H,290,356)(H,291,372)(H,292,373)(H,293,375)(H,294,374)(H,295,378)(H,296,354)(H,297,358)(H,298,355)(H,299,362)(H,300,352)(H,301,376)(H,302,363)(H,303,353)(H,304,330)(H,305,351)(H,306,369)(H,331,332)(H,333,334)(H,335,336)(H,337,338)(H,339,340)(H,341,342)/t130-,131-,132-,133+,146-,147-,148-,149-,150-,151-,152-,153-,154-,155-,156-,157-,158-,159-,160-,161-,162-,163-,164-,165-,166-,167-,168-,169-,170-,171-,172-,173-,174-,175-,176-,177-,178-,179-,180-,181-,182-,203-,204-,205-/m0/s1
  • Key:WQNDXLHKAMIGEX-WOAPPVHJSA-N

Bulevirtide, sold under the brand name Hepcludex, is an antiviral medication used for the treatment of chronic hepatitis D (in the presence of hepatitis B).[8]

The most common side effects include raised levels of bile salts in the blood and reactions at the site of injection.[8]

Bulevirtide works by attaching to and blocking a receptor (target) through which the hepatitis delta and hepatitis B viruses enter liver cells.[8] By blocking the entry of the virus into the cells, it limits the ability of HDV to replicate and its effects in the body, reducing symptoms of the disease.[8]

Bulevirtide was approved for medical use in the European Union in July 2020,[8] and in Canada in August 2025.[5]

Medical uses

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Bulevirtide is indicated for the treatment of chronic hepatitis delta virus (HDV) infection in plasma (or serum) HDV-RNA positive adult patients with compensated liver disease.[8][10]

Pharmacology

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Mechanism of action

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Bulevirtide binds and inactivates the sodium/bile acid cotransporter, blocking both hepatitis B and hepatitis D viruses from entering hepatocytes.[11]

The hepatitis B virus uses its surface lipopeptide pre-S1 for docking to mature liver cells via their sodium/bile acid cotransporter (NTCP) and subsequently entering the cells. Myrcludex B is a synthetic N-acylated pre-S1[12][13] that can also dock to NTCP, blocking the virus's entry mechanism.[14]

Bulevirtide is also effective against hepatitis D because the hepatitis D virus uses the same entry receptor as the hepatitis B virus and is only effective in the presence of a hepatitis B virus infection.[14]

Pre-clinical data in mice suggests that pharmacological inhibition of NTCP-mediated bile salt uptake may also be effective to lower hepatic bile salt accumulation in cholestatic conditions. This reduces hepatocellular damage.[15] An increased ratio of phospholipid to bile salts seen in bile upon NTCP inhibition may further contribute to the protective effect as bile salts are less toxic in presence of phospholipids.[16]

Structural formula

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Bulevirtide is a 47-amino acid peptide with the following sequence:[17]

CH3(CH2)12CO-Gly-Thr-Asn-Leu-Ser-Val-Pro-Asn-Pro-Leu-Gly-Phe-Phe-Pro-Asp-His-Gln-Leu-Asp-Pro-Ala-Phe-Gly-Ala-Asn-Ser-Asn-Asn-Pro-Asp-Trp-Asp-Phe-Asn-Pro-Asn-Lys-Asp-His-Trp-Pro-Glu-Ala-Asn-Lys-Val-Gly-NH2 (C13H27CO-GTNLSVPNPLGFFPDHQLDPAFGANSNNPDWDFNPNKDHWPEANKVG-NH2)

References

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  8. ^ a b c d e f g Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
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  15. ^ Na+ -taurocholate cotransporting polypeptide inhibition has hepatoprotective effects in cholestasis in mice. Slijepcevic D, Roscam Abbing RLP, Fuchs CD, Haazen LCM, Beuers U, Trauner M, Oude Elferink RPJ, van de Graaf SFJ. Hepatology. 2018 Sep;68(3):1057-1069. doi: 10.1002/hep.29888
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