Current status of anti-HIV drugs

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Drug Type

Brand Name
Links to simple fact sheets from AIDS Treatment Data Network

Generic

Chemical Name or Identifier

Clinical Stage in US 
(July 1999) 

Manufacturer
(link to manufacturer data sheet or other information)

Other Links

+

Misc

NIAID database

structure

Drugs that inhibit the HIV protease

Protease inhibitor Crixivan

indinavir   Approved Merck     here
Protease inhibitor Invirase

saquinavir  (hard gel)    Approved Hoffmann-
La Roche
    here
Protease inhibitor Fortovase saquinavir (soft gel)   Approved Hoffmann-
La Roche
    here
Protease inhibitor Norvir ritonavir   Approved Abbott Body   here
Protease inhibitor Viracept nelfinavir   Approved Hoffman La Roche/ Agouron     here
Protease inhibitor Agenerase

Prozei

amprenavir  141W94/VX-478

Approved 

Glaxo-
Wellcome
DG

Body

  here
Protease inhibitor   lopinavir  ABT-378 Phase III
Likely to file for FDA approval in 2000
Abbott H+H News here
Protease inhibitor   tripanavir PNU-140690 Phase II Pharmacia 
& Upjohn
  Non-peptide inhibitor based on a dihydropyrone template. Synergizes with Ritonavir  here
Protease inhibitor     BMS-232632 Phase I/II Bristol-Myers 
Squibb
  Azapeptide protease inhibitor  
Protease inhibitor     DMP-450 Phase I Triangle   Novel cyclic urea compound here
Protease inhibitor L756423 Phase II Merke May delay resistance with AZT
Protease inhibitor     AG1776   Agouron   Maintains activity against strains of HIV resistant to current protease inhibitors  
Protease inhibitor GW433908 (VX-175)   Glaxo Wellcome and Vertex A "prodrug" form of amprenavir. A prodrug becomes active
after it is broken down in the body.

Drugs that are DNA chain terminators and competitive inhibitors of reverse transcriptase 

Nucleoside RT inhibitor Combivir * zidovudine +lamivudine   Approved Glaxo-
Wellcome

H&H

   
Nucleoside RT inhibitor Epivir lamivudine  3TC Approved Glaxo-
Wellcome
    here
Nucleoside RT inhibitor Hivid zalcitabine  ddC Approved Hoffman-
La Roche
    here
Nucleoside RT inhibitor Retrovir zidovudine  AZT Approved Glaxo-
Wellcome
    here
Nucleoside RT inhibitor Videx didanosine  ddI Approved Bristol-Myers
Squibb
    here
Nucleoside RT inhibitor Zerit stavudine  d4T Approved Bristol-Myers Squibb     here
Nucleoside RT inhibitor Ziagen abacavir  1592U89 Approved Glaxo-
Wellcome
    here
Nucleoside RT inhibitor Preveon adefovir dipivoxil  PMEA Phase II/III Gilead 
Sciences
Body

H&H

Acyclic nucleotide analog. Anti-viral activity not high; may be useful in combination therapy. Nephrotoxicity a problem. Must be taken with carnitine.  here
Nucleoside RT inhibitor   tenofovir PMPA Phase II Gilead 
Sciences
  Acyclic nucleotide analog. Does not need carnitine and no nephrotoxicity. Well tolerated. Good anti-viral activtity here
Nucleoside RT inhibitor Coviracil emtricitabine FTC Phase II/III Triangle     here
Nucleoside RT inhibitor     DAPD (DXG) Phase I/II Triangle      
Nucleoside RT inhibitor   lodenosine F-ddA Phase II. Withdrawn - adverse events US Bioscience +ve   here
Nucleoside RT inhibitor dOTC
(BCH-10652)
Phase I/II Well tolerated

Drugs that are non-competitive inhibitors of reverse transcriptase

Non-nucleoside RT inhibitor Rescriptor delavirdine   Approved Pharmacia & Upjohn     here
Non-nucleoside RT inhibitor Viramune nevirapine   Approved Boeringer Ingelheim     here
Non-nucleoside RT inhibitor Sustiva efavirenz  DMP-266 Approved DuPont-
Merck
H&H Mechanism
More info
here
Non-nucleoside RT inhibitor Coactinon emivirine MKC-442 Phase II/III Triangle      
Non-nucleoside RT inhibitor     S-1153 Phase II Agouron     here
Non-nucleoside RT inhibitor DPC 961, 963, 082, 083 Phase I/II Du Pont Potent and better tolerated than Sustiva
Non-nucleoside RT inhibitor     GW420867X Phase I Glaxo-Wellcome      
Non-nucleoside RT inhibitor Calanolide A Phase I
Phase II at end of 1999
Sarawak Medichem Natural product - derived from a plant (Calophyllum lanigerum). Other calanolides being tested here

Drugs that are inhibitors of the integrase

Zintevir AR-177  Phase I/II human trials.  Aronex Pharmaceuticals Phase I trials showed that the drug is well tolerated. 
Zintevir belongs to a class of novel oligo- nucleotides. It is a short (17-mer) G-T-containing polynucleotide
Zintevir was first tested in 1998 and was thought to be an integrase inhibitor. However, while it may inhibit purified integrase in tests in the laboratory,this does not appear how it works against HIV in vivo. The drug appears to prevent the binding of gp120 to
CD4 cells.  This finding that Zintevir probably does not act as an integrase inhibitor in cells does not  affect its possible value as an HIV inhibitor. 

Drugs that are anti-sense inhibitors

HGTV43  Phase I Enzo Therapeutics, Mechanism

Press release

Drugs that interact with the surface glycoprotein of HIV

Gp120 competitor     PRO-542 Phase I/II Progenics   A fusion protein of  HIV-binding region of CD4 and a human antibody. It binds to gp120 and neutralizes it by preventing  virus from binding to the cell surface or detaching gp120 from the HIV envelope, thereby inactivating the virus  
Gp120 competitor     PRO-367 PhaseI/II Progenics   Radioimmuno-conjugate similar to PRO-542 that binds to HIV-infected cells and kills them via radio-therapeutic radioisotope  

Drugs that stop the fusion of the viral envelope with the host cell membrane

Fusion Inhibitor 
    AMD-3100 Phase I/II AnorMED   Synthetic molecule that blocks the "CXCR4" receptor on CD4 cells. The drug is administered by
injection.
 
Fusion Inhibitor FP21399 Phase I trial as a single infusion or a series of 4 weekly 1-hour
intravenous infusions. 
Fuji Pharmaceuticals The drug produced viral load decreases and CD4+ cell increases. Side effects were minor, including
blue-tinted urine and temporary blue marks on the skin. 
Fusion Inhibitor     T-1249   Phase I  Trimeris   T-1249 is effective against HIV that is resistant to T-20.   
Fusion Inhibitor     T-20 Phase II Trimeris- Hoffmann LaRoche   Mechanism
Mechanism
Mechanism

36 amino acid synthetic peptide that binds to a key region of  surface protein, gp41. 
Blocks HIV viral fusion by interfering with  structural rearrangements with gp41 that are required for HIV to fuse to and enter ahost cell. 

 
Fusion Inhibitor            T-1249 Phase I/II Trimeris    39 amino acid peptide that binds to a region of the HIV gp41 surface protein that differs from
the region bound by T-20.
   

Other drugs

Therapeutic Vaccine Remune immunogen   Phase III

Trial stopped (Go here)
New trial planned
Agouron/
Immune Response
  More info  

* Manufacturer's information sheet

+ H&H: HIVandHepatitis.com (see this link for HIV/AIDS news)
Body: thebody.com
DG: Doctor's Guide
+ve: hivpositive.com

For further information go here

Spanish fact sheets

Glossary of drugs and treatments

NIAID database of potential anti-HIV drugs

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