Evidence map›Paper›PMID 31321650›Full record

ArticleMolecular imaging and biology2020

Preclinical Dosimetry, Imaging, and Targeted Radionuclide Therapy Studies of Lu-177-Labeled Albumin-Binding, PSMA-Targeted CTT1403.

Xiaoxi Ling, Joseph D Latoche, Cindy J Choy, Brenda F Kurland, Charles M Laymon, Yijen Wu, Nathan Salamacha, Ding Shen, Jonathan J Geruntho, Lora H Rigatti and 4 more

Open access · greenAbstract read
In one paragraph

Article in Molecular imaging and biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.1field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Review
  3. Tailored Reaction Conditions and Automated Radiolabeling of [International journal of molecular sciences · 2025
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Preclinical Evaluation of a New Series of Albumin-BindingMolecules (Basel, Switzerland) · 2023
    Article
  10. Preclinical Evaluation ofJournal of nuclear medicine : official publication, Society of Nuclear Medicine · 2023
    Article
  11. Developments inFrontiers in chemistry · 2023
    Review
  12. Review
  13. Review
  14. Combined Targeted Radiopharmaceutical Therapy and Immune Checkpoint Blockade: From Preclinical Advances to the Clinic.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2022
    Article
  15. Preclinical investigations using [European journal of nuclear medicine and molecular imaging · 2022
    Article
  16. Article
  17. Advances in PSMA theranostics.Translational oncology · 2022
    Article
  18. Review
  19. Article
  20. Overview of the First NRG Oncology-National Cancer Institute Workshop on Dosimetry of Systemic Radiopharmaceutical Therapy.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2021
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 2 institutions in 1 country.

Xiaoxi LingDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
Joseph D LatocheDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
Cindy J ChoyCancer Targeted Technology, Woodinville, WA, USA.
Brenda F KurlandDepartment of Biostatistics, University of Pittsburgh, Pittsburgh, PA, USA.
Charles M LaymonDepartment of Radiology, University of Pittsburgh, Pittsburgh, PA, USA.
Yijen WuDepartment of Developmental Biology, University of Pittsburgh, Pittsburgh, PA, USA.
Nathan SalamachaDepartment of Developmental Biology, University of Pittsburgh, Pittsburgh, PA, USA.
Ding ShenDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
Jonathan J GerunthoDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
Lora H RigattiDivision of Laboratory Animal Resources, University of Pittsburgh, Pittsburgh, PA, USA.
Hillarie P WindishCancer Targeted Technology, Woodinville, WA, USA.
Beatrice Langton-WebsterCancer Targeted Technology, Woodinville, WA, USA.
Clifford E BerkmanCancer Targeted Technology, Woodinville, WA, USA.
Carolyn J AndersonDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, USA. cja34@pitt.edu.ORCID 0000-0002-5663-282X
University of Pittsburgh · USCancer Targeted Technology (United States) · US

Funding

VECTOR CORE FACILITYP30CA047904 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI JOHN C. BYRD · 1988 to 2026
$158.0M
Clinical Evaluation of an Innovative PSMA-targeted Radiotherapy, CTT1403, in Prostate CancerR44CA239461 · NCI · CANCER TARGETED TECHNOLOGY, LLC · PI LANGTON-WEBSTER, BEATRICE · 2019 to 2021
$3.2M
Clinical Evaluation of a Novel Prostate Cancer PET DiagnosticR44CA192451 · NCI · CANCER TARGETED TECHNOLOGY, LLC · PI LANGTON-WEBSTER, BEATRICE · 2015 to 2016
$2.0M
Development of a novel PET imaging agent for prostate cancerR44CA153481 · NCI · CANCER TARGETED TECHNOLOGY, LLC · PI LANGTON-WEBSTER, BEATRICE · 2010 to 2011
$1.5M
Development of a PSMA-Targeted Small-Molecule Drug Conjugate for Prostate CancerR43CA221511 · NCI · CANCER TARGETED TECHNOLOGY, LLC · PI LANGTON-WEBSTER, BEATRICE · 2018 to 2018
$300k
NCI NIH HHS HHSN261201500074CNCI NIH HHS P30 CA047904NCI NIH HHS R43 CA221511NCI NIH HHS R44 CA153481NCI NIH HHS R44 CA192451NCI NIH HHS R44 CA239461
6 · The paper itself

Abstract

purposeProstate-specific membrane antigen (PSMA) continues to be the hallmark biomarker for prostate cancer as it is expressed on nearly all prostatic tumors. In addition, increased PSMA expression correlates with castration resistance and progression to the metastatic stage of the disease. Recently, we combined both an albumin-binding motif and an irreversible PSMA inhibitor to develop the novel PSMA-targeted radiotherapeutic agent, CTT1403. This molecule was novel in the field of PSMA-targeted agents as its key motifs resulted in extended blood circulation time and tumor uptake, rapid and extensive internalization into PSMA+ cells, and promising therapeutic efficacy. The objective of this study was to perform IND-enabling translational studies on CTT1403 in rodent models. PROCEDURES: A dose optimization study was performed in PC3-PIP (PSMA+) tumor-bearing mice. Treatment groups were randomly selected to receive one to three 14-MBq injections of CTT1403. Control groups included (1) saline, (2) non-radioactive [

resultsTwo to 3 injections of 14 MBq CTT1403 yielded significant tumor growth inhibition and increased survival compared with all control groups and mice receiving 1 injection of 14 MBq CTT1403. Five of 12 mice receiving 2 or 3 injections of CTT1403 survived to the 120-day post-treatment study endpoint. Dosimetry identified the kidneys as the dose-limiting organ, with an equivalent dose of 5.18 mSv/MBq, resulting in a planned maximum dose of 4.4 GBq for phase 1 clinical trials.

conclusionsThe preclinical efficacy and dosimetry of CTT1403 suggest that this agent has significant potential to be safe and effective in humans.

Indexed as

AnimalsAntigens, SurfaceDrug Screening Assays, AntitumorGlutamate Carboxypeptidase IIHumansLutetiumMaleMiceMice, NudeNeoplasmsNeoplasm TransplantationRadioisotopesRadiometryRadiopharmaceuticalsRatsRats, Sprague-DawleyAntigens, SurfaceFOLH1 protein, humanGlutamate Carboxypeptidase IILutetiumLutetium-177RadioisotopesRadiopharmaceuticalsAlbumin binderLu-177Prostate-specific membrane antigenTargeted radionuclide therapy

Identifiers

PMID31321650
PMCPMC6980512
OpenAlexW2963700677

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.