Tarlatamab

Identification

Summary

Tarlatamab is a bispecific monoclonal antibody and T-cell engager targeting delta-like ligand 3 (DLL3) and CD3 to treat extensive-stage small cell lung cancer.

Brand Names
Imdelltra
Generic Name
Tarlatamab
DrugBank Accession Number
DB17256
Background

Tarlatamab is a first-in-class T-cell engager used to treat extensive-stage small cell lung cancer.4 It is a bispecific monoclonal antibody that targets CD3 expressed on the surface of T-cells and delta-like ligand 3 (DLL3), an inhibitory ligand that suppresses Notch signaling and is highly expressed across various SCLC disease stages and treatment statuses.3,1 Its bispecificity causes T-cell activation, the release of inflammatory cytokines, and lysis at DLL3-expressing cells.3

Tarlatamab-dlle was approved by the FDA in May 2024 for use in patients who have failed previous round of platinum-based chemotherapy,3,4 becoming the first DLL3-targeting bispecific T-cell engager to receive marketing approval.1

Type
Biotech
Groups
Approved, Investigational
Biologic Classification
Protein Based Therapies
Monoclonal antibody (mAb)
Protein Chemical Formula
Not Available
Protein Average Weight
105000.0 Da
Sequences
>TARLATAMAB_SUBUNIT_1
QVQLQESGPGLVKPSETLSLTCTVSGGSISSYYWSWIRQPPGKCLEWIGYVYYSGTTNYN
PSLKSRVTISVDTSKNQFSLKLSSVTAADTAVYYCASIAVTGFYFDYWGQGTLVTVSSGG
GGSGGGGSGGGGSEIVLTQSPGTLSLSPGERVTLSCRASQRVNNNYLAWYQQRPGQAPRL
LIYGASSRATGIPDRFSGSGSGTDFTLTISRLEPEDFAVYYCQQYDRSPLTFGCGTKLEI
KSGGGGSEVQLVESGGGLVQPGGSLKLSCAASGFTFNKYAMNWVRQAPGKGLEWVARIRS
KYNNYATYYADSVKDRFTISRDDSKNTAYLQMNNLKTEDTAVYYCVRHGNFGNSYISYWA
YWGQGTLVTVSSGGGGSGGGGSGGGGSQTVVTQEPSLTVSPGGTVTLTCGSSTGAVTSGN
YPNWVQQKPGQAPRGLIGGTKFLAPGTPARFSGSLLGGKAALTLSGVQPEDEAEYYCVLW
YSNRWVFGGGTKLTVLGGGGDKTHTCPPCPAPELLGGPSVFLFPPKPKDTLMISRTPEVT
CVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPCEEQYGSTYRCVSVLTVLHQDWLNGKEYK
CKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVE
WESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKS
LSLSPGGGGSGGGGSGGGGSGGGGSGGGGSGGGGSDKTHTCPPCPAPELLGGPSVFLFPP
KPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPCEEQYGSTYRCVSV
LTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSREEMTKNQVSL
TCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSC
SVMHEALHNHYTQKSLSLSPGK
References:
  1. NIH Inxight Drugs: Tarlatamab [Link]
Download FASTA Format
Synonyms
  • Immunoglobulin scfv-scfv-scfc, anti-(homo sapiens dll3 (delta-like ligand 3)) and anti-(homo sapiens cd3e (cd3 epsilon, leu-4)), monoclonal antibody single chain (scfv)2-scfc, bispecific
  • Tarlatamab
  • Tarlatamab-dlle
External IDs
  • AMG-757
  • AMG757

Pharmacology

Indication

Tarlatamab is indicated for the treatment of adult patients with extensive-stage small cell lung cancer (ES-SCLC) with disease progression on or after platinum-based chemotherapy.3

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Associated Conditions
Indication TypeIndicationCombined Product DetailsApproval LevelAge GroupPatient CharacteristicsDose Form
Treatment ofExtensive-stage small cell lung cancer (sclc)•••••••••••••••••••••••• ••••••••••• •• •• ••••• •••••••••••••• •••••••••••••••••••••
Contraindications & Blackbox Warnings
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Pharmacodynamics

Tarlatamab exerts its pharmacologic effects by selectively recruiting T-cells to cancerous cells expressing DLL3.3

Serious neurologic toxicities have been reported with the use of tarlatamab, including immune effector cell-associated neurotoxicity syndrome (ICANS). There was no observed exposure-response relationship with regards to efficacy over the studied dose range, but there was an increased risk of neurologic toxicity (including ICANS) and neutropenia at higher exposure.3 Tarlatamab may also cause cytokine release syndrome (CRS), most commonly following the first dose, which can be serious or life-threatening.3 Patients should be monitored closely for signs and symptoms suggestive of CRS or neurologic toxicities.

Mechanism of action

Tarlatamab is a bispecific monoclonal antibody and T-cell engager.3 It is directed at both delta-like ligand 3 (DLL3) expressed on cell surfaces and CD3 expressed on the surface of T-cells. DLL3 is an inhibitory ligand that suppresses Notch signaling which is aberrantly expressed on the surface of up to 85% of SCLC cells and minimally expressed in normal tissues, making it a compelling therapeutic target.2

Tarlatamab serves to recruit and direct T-cells towards tumor cells expressing DLL3, resulting in T-cell activation and the release of inflammatory cytokines ultimately causing lysis of DLL3-expressing cells.3

TargetActionsOrganism
ADelta-like protein 3
binder
antibody
Humans
AT-cell surface glycoprotein CD3
binder
antibody
Humans
Absorption

Tarlatamab is administered intravenously and therefore has an effective bioavailability of 100%.3 Following the first step-up dose of 1 mg, the geometric mean Cavg was 102 ng/mL, the geometric mean Cmax was 285, and the geometric mean Ctrough was 47 ng/mL.3 At steady-state, with the administration of 10 mg every 2 weeks, the geometric mean Cavg was 1040 ng/mL, the geometric mean Cmax was 3400, and the geometric mean Ctrough was 495 ng/mL.3

Volume of distribution

At steady-state, the volume of distribution of tarlatamab-dlle is 8.6 liters.3

Protein binding

Not Available

Metabolism

As with other therapeutic proteins, tarlatamab-dlle is likely metabolized into smaller peptides and amino acids by non-specific catabolic pathways.3

Route of elimination

Not Available

Half-life

The median terminal half-life of tarlatamab-dlle is 11.2 days.3

Clearance

The systemic clearance of tarlatamab-dlle in patients with SCLC is 0.65 L/day.3

Adverse Effects
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Toxicity

No data are available regarding overdosage of tarlatamab.

Pathways
Not Available
Pharmacogenomic Effects/ADRs
Not Available

Interactions

Drug Interactions
This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
Not Available
Food Interactions
Not Available

Products

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Brand Name Prescription Products
NameDosageStrengthRouteLabellerMarketing StartMarketing EndRegionImage
Imdelltra (amg757)Injection, powder, lyophilized, for solution; Kit2.4 mg/1mgIntravenousAMGEN INC2024-05-16Not applicableUS flag
Imdelltra (amg757)Injection, powder, lyophilized, for solution; Kit0.9 mg/1mgIntravenousAMGEN INC2024-05-16Not applicableUS flag

Categories

Drug Categories
Chemical TaxonomyProvided by Classyfire
Description
Not Available
Kingdom
Organic Compounds
Super Class
Organic Acids
Class
Carboxylic Acids and Derivatives
Sub Class
Amino Acids, Peptides, and Analogues
Direct Parent
Peptides
Alternative Parents
Not Available
Substituents
Not Available
Molecular Framework
Not Available
External Descriptors
Not Available
Affected organisms
  • Humans

Chemical Identifiers

UNII
74X82ST8Q1
CAS number
2307488-83-9

References

General References
  1. Su PL, Chakravarthy K, Furuya N, Brownstein J, Yu J, Long M, Carbone D, Li Z, He K: DLL3-guided therapies in small-cell lung cancer: from antibody-drug conjugate to precision immunotherapy and radioimmunotherapy. Mol Cancer. 2024 May 10;23(1):97. doi: 10.1186/s12943-024-02012-z. [Article]
  2. Addeo A, Banna GL, Friedlaender A: Tarlatamab: a potential new option for recurrent small cell lung cancer. Transl Lung Cancer Res. 2023 Jul 31;12(7):1628-1630. doi: 10.21037/tlcr-23-215. Epub 2023 Jun 5. [Article]
  3. FDA Approved Drug Products: Imdelltra (tarlatamab-dlle) for intravenous injection [Link]
  4. BioSpace: FDA APPROVES IMDELLTRA™ (TARLATAMAB-DLLE), THE FIRST AND ONLY T-CELL ENGAGER THERAPY FOR THE TREATMENT OF EXTENSIVE-STAGE SMALL CELL LUNG CANCER [Link]
RxNav
2682955
Wikipedia
Tarlatamab

Clinical Trials

Clinical Trials
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Explore 4,000+ rare diseases, orphan drugs & condition pairs, clinical trial why stopped data, & more. Preview package
PhaseStatusPurposeConditionsCountStart DateWhy Stopped100+ additional columns
Not AvailableAvailableNot AvailableSmall Cell Lung Cancer (SCLC)1somestatusstop reasonjust information to hide
3Active Not RecruitingTreatmentSmall Cell Lung Cancer (SCLC)1somestatusstop reasonjust information to hide
3RecruitingTreatmentExtensive-stage Small Cell Lung Cancer (SCLC) / Small Cell Lung Cancer (SCLC)1somestatusstop reasonjust information to hide
3RecruitingTreatmentSmall Cell Lung Cancer (SCLC) / Small Cell Lung Cancer, Limited Stage1somestatusstop reasonjust information to hide
2Active Not RecruitingTreatmentRelapsed/Refractory Small Cell Lung Cancer1somestatusstop reasonjust information to hide

Pharmacoeconomics

Manufacturers
Not Available
Packagers
Not Available
Dosage Forms
FormRouteStrength
Injection, powder, lyophilized, for solution; kitIntravenous0.9 mg/1mg
Injection, powder, lyophilized, for solution; kitIntravenous2.4 mg/1mg
Prices
Not Available
Patents
Not Available

Properties

State
Solid
Experimental Properties
Not Available

Targets

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Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Binder
Antibody
General Function
Inhibits primary neurogenesis. May be required to divert neurons along a specific differentiation pathway. Plays a role in the formation of somite boundaries during segmentation of the paraxial mesoderm (By similarity)
Specific Function
Calcium ion binding
Gene Name
DLL3
Uniprot ID
Q9NYJ7
Uniprot Name
Delta-like protein 3
Molecular Weight
64616.855 Da
References
  1. FDA Approved Drug Products: Imdelltra (tarlatamab-dlle) for intravenous injection [Link]
Kind
Protein group
Organism
Humans
Pharmacological action
Yes
Actions
Binder
Antibody
General Function
Part of the TCR-CD3 complex present on T-lymphocyte cell surface that plays an essential role in adaptive immune response. When antigen presenting cells (APCs) activate T-cell receptor (TCR), TCR-mediated signals are transmitted across the cell membrane by the CD3 chains CD3D, CD3E, CD3G and CD3Z. All CD3 chains contain immunoreceptor tyrosine-based activation motifs (ITAMs) in their cytoplasmic domain. Upon TCR engagement, these motifs become phosphorylated by Src family protein tyrosine kinases LCK and FYN, resulting in the activation of downstream signaling pathways (PubMed:2470098). In addition of this role of signal transduction in T-cell activation, CD3D plays an essential role in thymocyte differentiation. Indeed, participates in correct intracellular TCR-CD3 complex assembly and surface expression. In absence of a functional TCR-CD3 complex, thymocytes are unable to differentiate properly. Interacts with CD4 and CD8 and thus serves to establish a functional link between the TCR and coreceptors CD4 and CD8, which is needed for activation and positive selection of CD4 or CD8 T-cells (PubMed:12215456)
Specific Function
Identical protein binding

Components:
References
  1. FDA Approved Drug Products: Imdelltra (tarlatamab-dlle) for intravenous injection [Link]

Drug created at November 30, 2022 18:23 / Updated at August 23, 2024 02:37