Naptumomab estafenatox

Naptumomab estafenatox (ABR-217620) is a drug being developed for the treatment of various types of cancer like non-small cell lung carcinoma[1] and renal cell carcinoma.[2]

Schematic image of naptumomab estafenatox.
V_H, V_L: variable (antigen binding) domains of antibody fragment
C_H1, C_L: constant domains of antibody fragment
SAg: superantigen SEA/E-120

Naptumomab estafenatox
Monoclonal antibody
Type	Fab fragment
Source	Mouse
Target	5T4
Clinical data
ATC code	none
Identifiers
CAS Number	676258-98-3^N
ChemSpider	none
UNII	93T929W6LC
Chemical and physical data
Formula	C₃₂₅₅H₅₀₂₅N₈₅₅O₁₀₅₀S₁₈
Molar mass	73.5 kg/mol g·mol⁻¹
^NY (what is this?) (verify)

Mechanism of action

Chemically, it is a fusion protein consisting of the antigen-binding fragment (Fab) of a monoclonal antibody with the superantigen staphylococcal enterotoxin A (SEA/E-120, "estafenatox").[3] The Fab binds to 5T4, an antigen expressed by various tumor cells, and the superantigen induces an immune response by activating T lymphocytes.

References

Borghaei, H; Alpaugh, K; Hedlund, G; Forsberg, G; Langer, C; Rogatko, A; Hawkins, R; Dueland, S; Lassen, U (2009). "Phase I dose escalation, pharmacokinetic and pharmacodynamic study of naptumomab estafenatox alone in patients with advanced cancer and with docetaxel in patients with advanced non-small-cell lung cancer". Journal of Clinical Oncology. 27 (25): 4116–23. doi:10.1200/JCO.2008.20.2515. PMC 2734423. PMID 19636016.
ClinicalTrials.gov
WHO Drug Information

Monoclonal antibodies for tumors

Tumor
("-t(u[m])-")

Human ("-tumu-")	Adecatumumab^§ Ascrinvacumab^§ Cixutumumab^§ Conatumumab^§ Daratumumab Drozitumab^§ Duligotumab^§ Dusigitumab^§ Enfortumab vedotin^† Enoticumab^§ Figitumumab^§ Ganitumab^† Glembatumumab vedotin^† Intetumumab^§ Ipilimumab Iratumumab^§ Istiratumab Icrucumab^§ Lexatumumab^§ Lucatumumab^§ Mapatumumab^§ Narnatumab^§ Necitumumab Nesvacumab^§ Nivolumab Ofatumumab Olaratumab^† Panitumumab Patritumab^§ Pembrolizumab Pritumumab^§ Radretumab^§ Ramucirumab Rilotumumab^† Robatumumab^§ Seribantumab^§ Tarextumab^§ Teprotumumab^† Tovetumab^§ Vantictumab^§ Votumumab^§ Zalutumumab^† "-melu-" (melanoma) Flanvotumab^§
Mouse ("-tumo-")	Altumomab pentetate Anatumomab mafenatox Arcitumomab Bectumomab Blinatumomab Detumomab Ibritumomab tiuxetan Lilotomab Minretumomab Mitumomab Moxetumomab pasudotox^† Naptumomab estafenatox Nofetumomab merpentan Pemtumomab^† Pintumomab Racotumomab Satumomab pendetide Solitomab Taplitumomab paptox Tenatumomab Tositumomab 3F8 "-govo-" (ovarian tumor) Abagovomab Igovomab Oregovomab "-pro-" (prostate tumor) Capromab pendetide "-colo-" (colonic tumor) Edrecolomab Nacolomab tafenatox
Chimeric ("-tuxi-")	Amatuximab^§ Bavituximab^§ Brentuximab vedotin Carotuximab^† Cetuximab Derlotuximab biotin^§ Dinutuximab Ensituximab^§ Futuximab^§ Girentuximab^† Indatuximab ravtansine^§ Isatuximab^† Loncastuximab tesirine Margetuximab^† Rituximab^# Siltuximab Ublituximab^† IMAB362 "-mexi-" (melanoma): Ecromeximab^§
Humanized ("-tuzu-")	Abituzumab^§ Alemtuzumab Bevacizumab Bivatuzumab mertansine^§ Brontictuzumab^§ Cantuzumab mertansine^§ Cantuzumab ravtansine^§ Cirmtuzumab Citatuzumab bogatox^§ Clivatuzumab tetraxetan Cofetuzumab pelidotin Dacetuzumab^§ Demcizumab^§ Dalotuzumab^§ Denintuzumab mafodotin^§ Elotuzumab Emactuzumab^§ Emibetuzumab^§ Enoblituzumab^§ Etaracizumab^§ Farletuzumab^§ Ficlatuzumab^§ Flotetuzumab^§ Gemtuzumab ozogamicin^‡ Imgatuzumab^§ Inotuzumab ozogamicin^† Labetuzumab^§ Lifastuzumab vedotin^§ Lintuzumab^§ Lorvotuzumab mertansine^§ Lumretuzumab^§ Matuzumab^§ Milatuzumab^§ Nimotuzumab^† Obinutuzumab Ocaratuzumab^§ Otlertuzumab^§ Onartuzumab^§ Oportuzumab monatox^† Parsatuzumab^§ Pertuzumab Pinatuzumab vedotin^§ Polatuzumab vedotin^† Rosmantuzumab Rovalpituzumab tesirine^† Sacituzumab govitecan^† Sibrotuzumab^§ Simtuzumab^§ Tacatuzumab tetraxetan^§ Tigatuzumab^§ Trastuzumab Tucotuzumab celmoleukin^§ Vandortuzumab vedotin^§ Vanucizumab^§ Veltuzumab^§ Vorsetuzumab mafodotin^§ CBR96-doxorubicin immunoconjugate PankoMab "-gozu-" (ovarian tumor) Sofituzumab vedotin^§
Rat/mouse hybrid ("-tumaxo-")	Catumaxomab Ertumaxomab^§
Chimeric + humanized ("-tuxizu-")	Depatuxizumab mafodotin^† Duvortuxizumab Ontuxizumab^§

^#WHO-EM
^‡Withdrawn from market
Clinical trials:
- ^†Phase III
- ^§Never to phase III

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Naptumomab estafenatox

Mechanism of action

See also

References