Nomenclature of monoclonal antibodies
Encyclopedia
List of stems for
monoclonal antibody nomenclature
Prefix Target substem Source substem Stem
old new meaning meaning
variable -anibi- angiogenesis
Angiogenesis
Angiogenesis is the physiological process involving the growth of new blood vessels from pre-existing vessels. Though there has been some debate over terminology, vasculogenesis is the term used for spontaneous blood-vessel formation, and intussusception is the term for the formation of new blood...

 (inhibitor)
-a- rat
Rat
Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, Rattus norvegicus...

-mab
-ba(c)- -b(a)- bacterium -e- hamster
Hamster
Hamsters are rodents belonging to the subfamily Cricetinae. The subfamily contains about 25 species, classified in six or seven genera....

-ci(r)- -c(i)- circulatory system
Circulatory system
The circulatory system is an organ system that passes nutrients , gases, hormones, blood cells, etc...

-i- primate
Primate
A primate is a mammal of the order Primates , which contains prosimians and simians. Primates arose from ancestors that lived in the trees of tropical forests; many primate characteristics represent adaptations to life in this challenging three-dimensional environment...

-fung- -f(u)- fungus
Fungus
A fungus is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds , as well as the more familiar mushrooms. These organisms are classified as a kingdom, Fungi, which is separate from plants, animals, and bacteria...

-o- mouse
Mouse
A mouse is a small mammal belonging to the order of rodents. The best known mouse species is the common house mouse . It is also a popular pet. In some places, certain kinds of field mice are also common. This rodent is eaten by large birds such as hawks and eagles...

-ki(n)- -k(i)- interleukin
Interleukin
Interleukins are a group of cytokines that were first seen to be expressed by white blood cells . The term interleukin derives from "as a means of communication", and "deriving from the fact that many of these proteins are produced by leukocytes and act on leukocytes"...

-u- human
Human
Humans are the only living species in the Homo genus...

-les- inflammatory lesion
Lesion
A lesion is any abnormality in the tissue of an organism , usually caused by disease or trauma. Lesion is derived from the Latin word laesio which means injury.- Types :...

s
-xi- chimeric (human/foreign)
-li(m)- -l(i)- immune system
Immune system
An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and killing pathogens and tumor cells. It detects a wide variety of agents, from viruses to parasitic worms, and needs to distinguish them from the organism's own...

-zu- humanized
Humanized antibody
Humanized antibodies are antibodies from non-human species whose protein sequences have been modified to increase their similarity to antibody variants produced naturally in humans. The process of "humanization" is usually applied to monoclonal antibodies developed for administration to humans...

-mul- musculoskeletal system
Musculoskeletal system
A musculoskeletal system is an organ system that gives animals the ability to move using the muscular and skeletal systems...

-xizu-* chimeric/humanized hybrid
-ne(u)(r)- -n(e)-* nervous system
Nervous system
The nervous system is an organ system containing a network of specialized cells called neurons that coordinate the actions of an animal and transmit signals between different parts of its body. In most animals the nervous system consists of two parts, central and peripheral. The central nervous...

-axo- rat/mouse hybrid
(see trifunctional antibody
Trifunctional antibody
A trifunctional antibody is a monoclonal antibody with binding sites for two different antigens, typically CD3 and a tumor antigen, making it a type of bispecific monoclonal antibody. In addition, its intact Fc-part can bind to an Fc receptor on accessory cells like conventional monospecific...

)
-os- -s(o)- bone
Bone
Bones are rigid organs that constitute part of the endoskeleton of vertebrates. They support, and protect the various organs of the body, produce red and white blood cells and store minerals. Bone tissue is a type of dense connective tissue...

-toxa- -tox(a)- toxin
Toxin
A toxin is a poisonous substance produced within living cells or organisms; man-made substances created by artificial processes are thus excluded...

-co(l)- -t(u)- colonic tumor
-go(t)- testicular tumor
Testicular cancer
Testicular cancer is cancer that develops in the testicles, a part of the male reproductive system.In the United States, between 7,500 and 8,000 diagnoses of testicular cancer are made each year. In the UK, approximately 2,000 men are diagnosed each year. Over his lifetime, a man's risk of...

-go(v)- ovarian tumor
-ma(r)- mammary tumor
Mammary tumor
A mammary tumor is a tumor originating in the mammary gland. It is a common finding in older female dogs and cats that are not spayed, but they are found in other animals as well. The mammary glands in dogs and cats are associated with their nipples and extend from the underside of the chest to...

-me(l)- melanoma
Melanoma
Melanoma is a malignant tumor of melanocytes. Melanocytes are cells that produce the dark pigment, melanin, which is responsible for the color of skin. They predominantly occur in skin, but are also found in other parts of the body, including the bowel and the eye...

-pr(o)- prostate tumor
Prostate cancer
Prostate cancer is a form of cancer that develops in the prostate, a gland in the male reproductive system. Most prostate cancers are slow growing; however, there are cases of aggressive prostate cancers. The cancer cells may metastasize from the prostate to other parts of the body, particularly...

-tu(m)- miscellaneous tumor
-vi(r)- -v(i)- virus
Virus
A virus is a small infectious agent that can replicate only inside the living cells of organisms. Viruses infect all types of organisms, from animals and plants to bacteria and archaea...

* under discussion


The nomenclature of monoclonal antibodies is a naming scheme for assigning generic, or nonproprietary, names to monoclonal antibodies
Monoclonal antibodies
Monoclonal antibodies are monospecific antibodies that are the same because they are made by identical immune cells that are all clones of a unique parent cell....

. An antibody
Antibody
An antibody, also known as an immunoglobulin, is a large Y-shaped protein used by the immune system to identify and neutralize foreign objects such as bacteria and viruses. The antibody recognizes a unique part of the foreign target, termed an antigen...

 is a protein
Protein
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...

 that is produced in B cell
B cell
B cells are lymphocytes that play a large role in the humoral immune response . The principal functions of B cells are to make antibodies against antigens, perform the role of antigen-presenting cells and eventually develop into memory B cells after activation by antigen interaction...

s and used by the immune system
Immune system
An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and killing pathogens and tumor cells. It detects a wide variety of agents, from viruses to parasitic worms, and needs to distinguish them from the organism's own...

 of humans and other vertebrate
Vertebrate
Vertebrates are animals that are members of the subphylum Vertebrata . Vertebrates are the largest group of chordates, with currently about 58,000 species described. Vertebrates include the jawless fishes, bony fishes, sharks and rays, amphibians, reptiles, mammals, and birds...

 animals to identify a specific foreign object like a bacterium or a virus
Virus
A virus is a small infectious agent that can replicate only inside the living cells of organisms. Viruses infect all types of organisms, from animals and plants to bacteria and archaea...

. Monoclonal antibodies are those that were produced in identical cells
Clone (cell biology)
A clone is a group of identical cells that share a common ancestry, meaning they are derived from the same mother cell.Clonality implies the state of a cell or a substance being derived from one source or the other...

, often artificially, and so share the same target object. They have a wide range of applications including medical uses.

This naming scheme is used for both the World Health Organization
World Health Organization
The World Health Organization is a specialized agency of the United Nations that acts as a coordinating authority on international public health. Established on 7 April 1948, with headquarters in Geneva, Switzerland, the agency inherited the mandate and resources of its predecessor, the Health...

’s International Nonproprietary Name
International Nonproprietary Name
An International Nonproprietary Name is the official nonproprietary or generic name given to a pharmaceutical substance, as designated by the World Health Organization...

s (INN) and the United States Adopted Name
United States Adopted Name
United States Adopted Names are unique nonproprietary names assigned to pharmaceuticals marketed in the United States. Each name is assigned by the USAN Council, which is co-sponsored by the American Medical Association , the United States Pharmacopeial Convention , and the American Pharmacists...

s (USAN) for pharmaceuticals. In general, word stem
Word stem
In linguistics, a stem is a part of a word. The term is used with slightly different meanings.In one usage, a stem is a form to which affixes can be attached. Thus, in this usage, the English word friendships contains the stem friend, to which the derivational suffix -ship is attached to form a new...

s are used to identify classes of drugs, in most cases placed word-finally. All monoclonal antibody names end with the stem -mab. Unlike most other pharmaceuticals, monoclonal antibody nomenclature uses different preceding word parts (morpheme
Morpheme
In linguistics, a morpheme is the smallest semantically meaningful unit in a language. The field of study dedicated to morphemes is called morphology. A morpheme is not identical to a word, and the principal difference between the two is that a morpheme may or may not stand alone, whereas a word,...

s) depending on structure and function. These are officially called substems and sometimes erroneously infix
Infix
An infix is an affix inserted inside a word stem . It contrasts with adfix, a rare term for an affix attached to the end of a stem, such as a prefix or suffix.-Indonesian:...

es
, even by the USAN Council itself.

Components

Stem

The stem -mab is used for monoclonal antibodies as well as for their fragments, as long as at least one variable domain (the domain
Protein domain
A protein domain is a part of protein sequence and structure that can evolve, function, and exist independently of the rest of the protein chain. Each domain forms a compact three-dimensional structure and often can be independently stable and folded. Many proteins consist of several structural...

 that contains the target binding structure) is included. This is the case for antigen binding fragments and single-chain variable fragments, among other artificial proteins. Other antibody parts (such as Fc regions) and antibody mimetic
Antibody mimetic
Antibody mimetics are organic compounds that, like antibodies, can specifically bind antigens, but that are not structurally related to antibodies. They are usually artificial peptides or proteins with a molar mass of about 3 to 20 kDa...

s use different naming schemes.

Substem for origin/source

The substem preceding the stem denotes the animal from which the antibody is obtained. The first monoclonal antibodies were produced in mice (substem -o-, yielding the ending -omab; usually Mus musculus, the house mouse) or other non-human organisms. Neither INN nor USAN has ever been requested for antibodies from rat
Rat
Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, Rattus norvegicus...

s (theoretically -a-), hamster
Hamster
Hamsters are rodents belonging to the subfamily Cricetinae. The subfamily contains about 25 species, classified in six or seven genera....

s (-e-) and primate
Primate
A primate is a mammal of the order Primates , which contains prosimians and simians. Primates arose from ancestors that lived in the trees of tropical forests; many primate characteristics represent adaptations to life in this challenging three-dimensional environment...

s (-i-).

These non-human antibodies are recognized as foreign by the human immune system and may be rapidly cleared
Clearance (medicine)
In medicine, the clearance is a measurement of the renal excretion ability. Although clearance may also involve other organs than the kidney, it is almost synonymous with renal clearance or renal plasma clearance. Each substance has a specific clearance that depends on its filtration characteristics...

 from the body, provoke an allergic reaction, or both. To avoid this, parts of the antibody can be replaced with human amino acid sequences, or pure human antibodies can be engineered
Protein engineering
Protein engineering is the process of developing useful or valuable proteins. It is a young discipline, with much research taking place into the understanding of protein folding and recognition for protein design principles....

. If the constant region is replaced with the human form, the antibody is termed chimeric and the substem used is -xi-. Part of the variable regions may also be substituted, in which case it is called humanized and -zu- is used; typically, everything is replaced except the complementarity determining region
Complementarity determining region
Complementarity determining regions are regions within antibodies or T cell receptors where these proteins complement an antigen's shape. Thus, CDRs determine the protein's affinity and specificity for specific antigens...

s (CDRs), the three loops of amino acid sequences at the outside of each variable region that bind to the target structure. Partly chimeric and partly humanized antibodies use -xizu-. These three substems do not indicate the foreign species used for production. Thus, the human/mouse chimeric antibody basiliximab
Basiliximab
Basiliximab is a chimeric mouse-human monoclonal antibody to the α chain of the IL-2 receptor of T cells. It is used to prevent rejection in organ transplantation, especially in kidney transplants...

 ends in -ximab just as the human/macaque
Macaque
The macaques constitute a genus of Old World monkeys of the subfamily Cercopithecinae. - Description :Aside from humans , the macaques are the most widespread primate genus, ranging from Japan to Afghanistan and, in the case of the barbary macaque, to North Africa...

 antibody gomiliximab
Gomiliximab
Gomiliximab is a monoclonal antibody acting as an immunosuppressive drug for the treatment of allergic asthma. It targets the low affinity IgE receptor . The drug is a chimeric antibody from Macaca irus and Homo sapiens....

. Pure human antibodies use -u-.

Rat/mouse hybrid antibodies can be engineered with binding sites for two different antigens. These drugs, termed trifunctional antibodies, have the substem -axo-.

Substem for target

The substem preceding the source of the antibody refers to the medicine's target. Examples of targets are tumor
Tumor
A tumor or tumour is commonly used as a synonym for a neoplasm that appears enlarged in size. Tumor is not synonymous with cancer...

s, organ systems like the circulatory system
Circulatory system
The circulatory system is an organ system that passes nutrients , gases, hormones, blood cells, etc...

, or infectious agents like bacteria
Bacteria
Bacteria are a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals...

 or virus
Virus
A virus is a small infectious agent that can replicate only inside the living cells of organisms. Viruses infect all types of organisms, from animals and plants to bacteria and archaea...

es. The term target does not imply what sort of action the antibody exerts. Therapeutic, prophylactic and diagnostic agents are not distinguished by this nomenclature.

In the naming scheme as originally developed, these substems mostly consist of a consonant, a vowel, then another consonant. The final letter may be dropped if the resulting name would be difficult to pronounce otherwise. Examples include -ci(r)- for the circulatory system, -li(m)- for the immune system
Immune system
An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and killing pathogens and tumor cells. It detects a wide variety of agents, from viruses to parasitic worms, and needs to distinguish them from the organism's own...

 (lim stands for lymphocyte
Lymphocyte
A lymphocyte is a type of white blood cell in the vertebrate immune system.Under the microscope, lymphocytes can be divided into large lymphocytes and small lymphocytes. Large granular lymphocytes include natural killer cells...

) and -ne(r)- for the nervous system. The final letter is usually omitted if the following source substem begins with a consonant (such as -zu- or -xi-), but not all target substems are used in their shortened form. -mul-, for example, is never reduced to -mu- because no chimeric or humanized antibodies targeting the musculoskeletal system
Musculoskeletal system
A musculoskeletal system is an organ system that gives animals the ability to move using the muscular and skeletal systems...

 ever received an INN. Combination of target and source substems results in endings like -limumab (immune system, human) or -ciximab (circulatory system, chimeric, consonant r dropped).

New and shorter target substems were adopted in 2009. They mostly consist of a consonant, plus a vowel which is omitted if the source substem begins with a consonant. For example, human antibodies targeting the immune system receive names ending in -lumab instead of the old -limumab. Some endings like -ciximab remain unchanged. The old system employed seven different substems for tumor targets, depending on the type of tumor. Because many antibodies are investigated for several tumor types, the new convention only has -t(u)-.

Prefix

The prefix carries no special meaning. It should be unique for each medicine and contribute to a well sounding name. This means that antibodies with the same source and target substems are only distinguished by their prefix. Even antibodies targeting exactly the same structure are differently prefixed, such as the adalimumab
Adalimumab
Adalimumab is the third TNF inhibitor, after infliximab and etanercept, to be approved in the United States. Like infliximab and etanercept, adalimumab binds to TNFα, preventing it from activating TNF receptors; adalimumab was constructed from a fully human monoclonal antibody, while infliximab...

 and golimumab
Golimumab
Golimumab is a human monoclonal antibody which is used as an immunosuppressive drug and marketed under the brand name Simponi. Golimumab targets tumor necrosis factor alpha , a pro-inflammatory molecule and hence is a TNF inhibitor....

, both of which are TNF inhibitor
TNF inhibitor
Tumor necrosis factor promotes the inflammatory response, which in turn causes many of the clinical problems associated with autoimmune disorders such as rheumatoid arthritis, ankylosing spondylitis, Crohn's disease, psoriasis, hidradenitis suppurativa and refractory asthma. These disorders are...

s but differ in their chemical structure.

Additional words

A second word following the name of the antibody indicates that another substance is attached, which is done for several reasons.
  • An antibody can be PEGylated (attached to molecules of polyethylene glycol
    Polyethylene glycol
    Polyethylene glycol is a polyether compound with many applications from industrial manufacturing to medicine. It has also been known as polyethylene oxide or polyoxyethylene , depending on its molecular weight, and under the tradename Carbowax.-Available forms:PEG, PEO, or POE refers to an...

    ) to slow down its degradation by enzymes and to decrease its immunogenicity
    Immunogenicity
    Immunogenicity is the ability of a particular substance, such as an antigen or epitope, to provoke an immune response in the body of a human or animal.- Immunogenicity :The ability to induce humoral and/or cell-mediated immune responses....

    ; this is shown by the word pegol as in alacizumab pegol
    Alacizumab pegol
    Alacizumab pegol is an antineoplastic agent. Chemically, it is a pegylated F2 fragment of a monoclonal antibody.- References :...

    .
  • A cytotoxic agent can be linked to an anti-tumor antibody for drug targeting purposes. The word vedotin, for example, stands for monomethyl auristatin E
    Monomethyl auristatin E
    Monomethyl auristatin E is a synthetic antineoplastic agent. Because of its toxicity, it cannot be used as a drug itself; instead, it is linked to a monoclonal antibody which directs it to the cancer cells...

     which is toxic by itself but predominantly affects cancer cells if used in conjugates like glembatumumab vedotin
    Glembatumumab vedotin
    Glembatumumab vedotin is an antibody-drug conjugate that targets cancer cells expressing transmembrane glycoprotein NMB ....

    .
  • A chelator for binding a radioisotope can be attached. Pendetide
    Pendetide
    Pendetide is a chelating agent. It consists of pentetic acid linked to the tripeptide glycine – L-tyrosine – L-lysine .-Use:The following monoclonal antibodies are linked to pendetide to chelate a radionuclide, indium-111...

    , a derivative of pentetic acid, is used for example in capromab pendetide
    Capromab pendetide
    Indium capromab pendetide is used to image the extent of prostate cancer. Capromab is a mouse monoclonal antibody which recognizes prostate specific membrane antigen from prostate cancer cells and normal prostate tissue. It is linked to pendetide, a derivative of DTPA. Pendetide acts as a...

     to chelate indium-111. If the drug contains a radioisotope, the name of the isotope precedes the name of the antibody. Consequently, indium (111In) capromab pendetide is the name for the above example including indium-111.

History

Emil von Behring and Kitasato Shibasaburō
Kitasato Shibasaburō
Baron was a Japanese physician and bacteriologist. He is remembered as the co-discoverer of the infectious agent of bubonic plague in Hong Kong in 1894, almost simultaneously with Alexandre Yersin.-Biography:...

 discovered in 1890 that diphtheria
Diphtheria toxin
Diphtheria toxin is an exotoxin secreted by Corynebacterium diphtheriae, the pathogen bacterium that causes diphtheria. Unusually, the toxin gene is encoded by a bacteriophage...

 and tetanus toxins were neutralized in the bloodstream of animals by substances they called antitoxins, which were specific for the respective toxin. Behring received the first Nobel Prize in Physiology or Medicine
Nobel Prize in Physiology or Medicine
The Nobel Prize in Physiology or Medicine administered by the Nobel Foundation, is awarded once a year for outstanding discoveries in the field of life science and medicine. It is one of five Nobel Prizes established in 1895 by Swedish chemist Alfred Nobel, the inventor of dynamite, in his will...

 for their find in 1901. A year after the discovery, Paul Ehrlich
Paul Ehrlich
Paul Ehrlich was a German scientist in the fields of hematology, immunology, and chemotherapy, and Nobel laureate. He is noted for curing syphilis and for his research in autoimmunity, calling it "horror autotoxicus"...

 used the term antibodies (German
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

 Antikörper) for these antitoxins.

The principle of monoclonal antibody production, called hybridoma technology, was published in 1975 by Georges Köhler and César Milstein
César Milstein
César Milstein FRS was an Argentine biochemist in the field of antibody research. Milstein shared the Nobel Prize in Physiology or Medicine in 1984 with Niels K. Jerne and Georges Köhler.-Biography:...

, who were awarded the 1984 Medicine Nobel Prize for their discovery together with Niels Kaj Jerne
Niels Kaj Jerne
Niels Kaj Jerne, FRS was a Danish immunologist. He was awarded the Nobel Prize in Physiology or Medicine in 1984. The citation read "For theories concerning the specificity in development and control of the immune system and the discovery of the principle for production of monoclonal antibodies"....

. Muromonab-CD3 was the first monoclonal antibody to be approved for clinical use in humans, in 1986.

The World Health Organization (WHO) introduced the system of International Nonproprietary Names in 1950, with the first INN list being published three years later. The stem -mab for monoclonal antibodies was proposed around 1990, and the current system with target and source substems was developed between 1991 and 1993. Due to the collaboration between the WHO and the United States Adopted Names Council, antibody USANs have the same structure and are largely identical to INNs. Until 2009, more than 170 monoclonal antibodies received names following this nomenclature.

In October 2008, the WHO convoked a working group to revise the nomenclature of monoclonal antibodies, to meet challenges discussed in April the same year. This led to the adoption of the new target substems in November 2009. In spring 2010, the first new antibody names were adopted.

New convention

  • Olaratumab
    Olaratumab
    Olaratumab is a monoclonal antibody which is being developed by Imclone for the treatment of solid tumors. It is directed against the platelet-derived growth factor receptor alpha....

     is an antineoplastic. Its name is composed of the components olara-t-u-mab. This shows that the drug is a human monoclonal antibody acting against tumors.
  • The name of benralizumab
    Benralizumab
    Benralizumab is a monoclonal antibody which is being developed by MedImmune for the treatment of asthma. It is directed against the alpha-chain of the interleukin-5 receptor ....

    , a drug designed for the treatment of asthma
    Asthma
    Asthma is the common chronic inflammatory disease of the airways characterized by variable and recurring symptoms, reversible airflow obstruction, and bronchospasm. Symptoms include wheezing, coughing, chest tightness, and shortness of breath...

    , has the components benra-li-zu-mab, marking it as a humanized antibody acting on the immune system.

Old convention

  • Adalimumab is a drug targeting TNF alpha. Its name can be broken down into ada-lim-u-mab. Therefore, the drug is a human monoclonal antibody targeting the immune system. If adalimumab had been named after 2009, it would have been adalumab.
  • Abciximab is a commonly used medication to prevent platelet
    Platelet
    Platelets, or thrombocytes , are small,irregularly shaped clear cell fragments , 2–3 µm in diameter, which are derived from fragmentation of precursor megakaryocytes.  The average lifespan of a platelet is normally just 5 to 9 days...

    s from clumping together. Broken down into ab-ci-xi-mab, its name shows the drug to be a chimeric monoclonal antibody used on the cardiovascular system. This and the following two names would look the same if the new convention were applied.
  • The name of the breast cancer
    Breast cancer
    Breast cancer is cancer originating from breast tissue, most commonly from the inner lining of milk ducts or the lobules that supply the ducts with milk. Cancers originating from ducts are known as ductal carcinomas; those originating from lobules are known as lobular carcinomas...

     medication trastuzumab
    Trastuzumab
    Trastuzumab is a monoclonal antibody that interferes with the HER2/neu receptor.The HER receptors are proteins that are embedded in the cell membrane and communicate molecular signals from outside the cell to inside the cell, and turn genes on and off...

     can be analyzed as tras-tu-zu-mab. Therefore, the drug is a humanized monoclonal antibody used against a tumor.
  • Alacizumab pegol is a PEGylated humanized antibody targeting the circulatory system.
  • Technetium (99mTc) pintumomab and technetium (99mTc) nofetumomab merpentan are radiolabeled antibodies, merpentan being a chelator that links the antibody nofetumomab to the radioisotope technetium-99m
    Technetium-99m
    Technetium-99m is a metastable nuclear isomer of technetium-99, symbolized as 99mTc. The "m" indicates that this is a metastable nuclear isomer, i.e., that its half-life of 6 hours is considerably longer than most nuclear isomers that undergo gamma decay...

    .
  • Rozrolimupab
    Rozrolimupab
    Rozrolimupab is a polyclonal antibody used in the treatment of autoimmune thrombocytopenic purpura, prevention of isoimmunization in Rh-negative pregnant women.This drug was developed by Symphogen A/S....

     is a polyclonal antibody. Broken down into rozro-lim-u-pab, its name shows the drug to be a human polyclonal antibody acting on the immune system. The suffix -pab shows it is a polyclonal antibody.

Deviations

  • The monoclonal antibody muromonab-CD3, approved for clinical use in 1986, was named before these conventions took effect, and consequently its name does not follow them. Instead, it is a contraction from "murine monoclonal antibody targeting CD3".
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