Delving into the Latest Updates on 99mTc-3PRGD2 with Synapse

Overview

Basic Info

Drug Type

Peptide Conjugate Radionuclide, Diagnostic radiopharmaceuticals

Synonyms

Target

αvβ3

Mechanism

αvβ3 modulators(Integrin alpha-V/beta-3 modulators), SPECT(Single-photon emission-computed tomography enhancers)

Therapeutic Areas

NeoplasmsRespiratory DiseasesOther Diseases+ [3]

Active Indication-

Inactive Indication

Esophageal CarcinomaLung CancerLymphatic Metastasis+ [2]

Originator Organization

Peking University

Active Organization-

Inactive Organization

First Affiliated Hospital Of Fujian Medical University

Sun Yat-Sen UniversityInstitute of Biophysics of Chinese Academy of Sciences

+ [4]

Drug Highest PhasePendingPhase 3

First Approval Date-

Regulation-

Gene Sequence

Sequence Code 95090

Sequence Code 565009095

Main purpose: To evaluate the effectiveness of technetium [99mTc] hydrazine nicotinamide polyethylene glycol bicyclic RGD peptide (99mTc-3PRGD2) in the diagnosis of lymph node metastasis in lung tumors. Secondary objectives: To evaluate the effectiveness of 99mTc-3PRGD2 in the differential diagnosis of benign and malignant lung tumors; to evaluate the safety of 99mTc-3PRGD2 in humans.

Start Date05 Nov 2019

Sponsor / Collaborator

Peking University

[+2]

NCT04233476 / CompletedPhase 3

An Evaluation of the Efficacy and Safety of Technetium [99mTc] Hydrazinonicotinamide PEGylated Bicyclic RGD Peptide Injection in a Multicenter, Open, Self-controlled Clinical Trial for the Lymph Node Metastasis in Lung Tumors

The study drug Technetium [99mTc] Hydrazinonicotinamide PEGylated Bicyclic RGD Peptide Injection（99mTc-3PRGD2） of this study is a novel radioactive diagnostic preparation for clinical use as a nuclear medicine molecular probe for tumor SPECT/CT imaging.
After 99mTc-3PRGD2 is injected into the body, it is specifically taken up by integrin receptor-positive tumor tissue, and the image of tumor tissue can be obtained by SPECT/CT, This can be used for molecular imaging diagnosis and individualized treatment of common tumors.
The primary objective of this study was to evaluate the efficacy of 99mTc-3PRGD2 for the diagnosis of lymph node metastasis in lung tumors. The minor objective was to evaluate the efficacy of 99mTc-3PRGD2 in the differential diagnosis of benign and malignant lung tumors and the safety of 99mTc-3PRGD2 in vivo of humans.

Start Date12 Oct 2019

Sponsor / Collaborator

RDO Pharm.

[+1]

NCT03974685 / CompletedPhase 1

Phase I Open Label Trial of Pharmacokinetics and Safety of 99mTc Niacinamide Polyethylene Glycol Bicyclic RGD Peptide (99mTc-3PRGD2) Injection in Healthy Volunteers

The study drug 99mTc-3PRGD2 of this study is a new radioactive diagnostic preparation for clinical use as a nuclear medicine molecular probe for tumor SPECT/CT imaging.
After 99mTc-3PRGD2 is injected into the body, it is specifically taken up by integrin receptor-positive tumor tissue, and tumor tissue is developed by SPECT/CT, which can be used for molecular imaging diagnosis and individualized treatment of common tumors.
The primary objectives of this study is to examine the pharmacokinetics the safety of 99mTc-3PRGD2 injection in healthy volunteers, as well as the biodistribution in the human body and to estimate the dose of internal radiation absorbed. This study provides the basis for the design of phase II clinical research programs.

Start Date12 Dec 2018

Sponsor / Collaborator

RDO Pharm.

[+2]

100 Clinical Results associated with 99mTc-3PRGD2

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100 Translational Medicine associated with 99mTc-3PRGD2

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100 Patents (Medical) associated with 99mTc-3PRGD2

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23

Literatures (Medical) associated with 99mTc-3PRGD2

01 Jan 2023·Frontiers in oncology

Direct attenuation correction for ^99mTc-3PRGD₂ chest SPECT lung cancer images using deep learning.

Article

Author: Ba, Jiantao ; Jin, Xiaona ; Jing, Hongli ; Xing, Haiqun ; Li, Fang ; Tian, Jian ; Wang, Tong

IntroductionThe attenuation correction technique of single photon emission computed tomography (SPECT) images is essential for early diagnosis, therapeutic evaluation, and pharmacokinetic studies of lung cancer. ^99mTc-3PRGD₂ is a novel radiotracer for the early diagnosis and evaluation of treatment effects of lung cancer. This study preliminary discusses the deep learning method to directly correct the attenuation of ^99mTc-3PRGD₂ chest SPECT images.MethodsRetrospective analysis was performed on 53 patients with pathological diagnosis of lung cancer who received ^99mTc-3PRGD₂ chest SPECT/CT. All patients' SPECT/CT images were reconstructed with CT attenuation correction (CT-AC) and without attenuation correction (NAC). The CT-AC image was used as the reference standard (Ground Truth) to train the attenuation correction (DL-AC) SPECT image model using deep learning. A total of 48 of 53 cases were divided randomly into the training set, the remaining 5 were divided into the testing set. Using 3D Unet neural network, the mean square error loss function (MSELoss) of 0.0001 was selected. A testing set is used to evaluate the model quality, using the SPECT image quality evaluation and quantitative analysis of lung lesions tumor-to-background (T/B).ResultsSPECT imaging quality metrics between DL-AC and CT-AC including mean absolute error (MAE), mean-square error (MSE), peak signal-to-noise ratio (PSNR), structural similarity (SSIM), normalized root mean square error (NRMSE), and normalized Mutual Information (NMI) of the testing set are 2.62 ± 0.45, 58.5 ± 14.85, 45.67 ± 2.80, 0.82 ± 0.02, 0.07 ± 0.04, and 1.58 ± 0.06, respectively. These results indicate PSNR > 42, SSIM > 0.8, and NRMSE < 0.11. Lung lesions T/B (maximum) of CT-AC and DL-AC groups are 4.36 ± 3.52 and 4.33 ± 3.09, respectively (p = 0.81). There are no significant differences between two attenuation correction methods.ConclusionOur preliminary research results indicate that using the DL-AC method to directly correct ^99mTc-3PRGD₂ chest SPECT images is highly accurate and feasible for SPECT without configuration with CT or treatment effect evaluation using multiple SPECT/CT scans.

01 Nov 2022·Thoracic Cancer

Evaluation of ^99mTc‐3PRGD₂ SPECT imaging on angiogenesis in animal models of lung cancer

Article

Author: Wang, Yufei ; Teng, Chuanhui ; Guo, Zhanlin ; Yang, Zheng ; Wu, Yongkun

AbstractBackgroundThe main purpose of the study was to evaluate the activity and selectivity of 99mTc‐3PRGD2 SPECT/CT and 18F‐FDG PET‐CT in order to detect the neovascularization of A549 cell subcutaneously transplanted tumors, and clarify the relationship among tumor vasculature, hypoxia and cell proliferation in the tumor microenvironment.MethodsWe established a subcutaneous tumor model, and used 99mTc‐3PRGD2 SPECT/CT and 18F‐FDG PET‐CT when the average tumor size reached 0.3–0.5 cm3. The mice were anesthetized and sacrificed and the tumors were completely removed for frozen section analysis. We subsequently evaluated the status of neovascularization, hypoxia, as well as cell proliferation via immunofluorescence staining (IF) by detecting CD31, pimonidazole and EdU, respectively.ResultsThere was a significant positive correlation (r = 0.88, p < 0.05) between the microvascular density (41.20 ± 18.60) and tumor to nontumor ratio (T/M), which was based on the value of 99mTc‐3PRGD2 (4.20 ± 1.33); meanwhile, no significance (r = −0.16, p > 0.05) was found between the T/M and hypoxic area (116.71 ± 9.36). Neovascular proliferation was particularly vigorous in the parenchymal region of the tumor, while the cells around the cavity were generally hypoxic. 99mTC‐3PRGD2 SPECT/CT was more specific than 18F‐FDG PET‐CT in detecting malignant tumors.ConclusionBoth 99mTC‐3PRGD2 and 18F‐FDG PET‐CT can be used for the detection of malignant tumors, but the specificity and accuracy of 99mTC‐3PRGD2 are better. The subcutaneous tumors showed a heterogeneous microenvironment as a result of neovascularization, a high proliferation rate of cancer cells as well as subsequent hypoxia, while most of the hypoxic areas appeared around the cavities of the vessels.

01 Aug 2021·Nuklearmedizin - NuclearMedicineQ4 · MEDICINE

Assessing Doxorubicin-Induced Cardiomyopathy by 99mTc-3PRGD2 Scintigraphy Targeting Integrin αvβ3 in a Rat Model

Q4 · MEDICINE

Article

Author: Sui, Shi ; Hou, Yang

AbstractThe present study evaluated interstitial alterations in doxorubicin-induced cardiomyopathy using a radiolabeled RGD peptide 99mTc-3PRGD2 specific for integrin αvβ3 that targets myofibroblasts.Cardiomyopathy was induced in 20 Sprague-Dawley rats by intraperitoneal doxorubicin injections (2.5 mg/kg/week) for up to six weeks. 99mTc-3PRGD2 scintigraphy was performed in control rats (n = 6) at baseline and three, six, and nine weeks after first doxorubicin administration (n = 6, 6, and 5 for each time point). For another three rats of 6-week modeling, cold c(RGDyK) was co-injected with 99mTc-3PRGD2 to evaluate specific radiotracer binding. Semi-quantitative parameters were acquired to compare radiotracer uptake among all groups. The biodistribution of 99mTc-3PRGD2 was evaluated by a γ-counter after scintigraphy. Haematoxylin and eosin, and Masson’s staining were used to evaluate myocardial injury and fibrosis, while western blotting and immunofluorescence co-localization were used to analyze integrin αvβ3 expression in the myocardium.The 99mTc-3PRGD2 half-life in the cardiac region (Heartt 1/2) of the 9-week model and heart radioactivity percentage (%Heart20 min, %Heart40 min and %Heart60 min) of the 6 and 9-week models were significantly increased compared to the control. Heart-to-background ratio (HBR20 min, HBR40 min and HBR60 min) increase began in the third week, continued until the sixth week, and was reversed in the ninth week, which paralleled the changing trend of cardiac integrin αvβ3 expression. The myocardial biodistribution of 99mTc-3PRGD2 was significantly correlated with integrin β3 expression.The 99mTc-3PRGD2 scintigraphy allows for non-invasive visualization of interstitial alterations during doxorubicin-induced cardiomyopathy.

100 Deals associated with 99mTc-3PRGD2

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R&D Status

10 top R&D records.

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Indication	Highest Phase	Country/Location	Organization	Date
Lung Cancer	Phase 3	CN	Chinese Academy of Sciences	30 Jul 2019
Lymphatic Metastasis	Phase 3	CN	Foshan Rui Diao Pharmaceutical Co Ltd	30 Jul 2019
Lymphatic Metastasis	Phase 3	CN	Chinese Academy of Sciences	30 Jul 2019
Rheumatoid Arthritis	Phase 3	CN	First Affiliated Hospital Of Fujian Medical University	01 Nov 2015
Neoplasms	Phase 1	CN	-	02 Jan 2019
Lymphatic Metastasis	Discovery	CN	Peking University	30 Jul 2019
Esophageal Carcinoma	Discovery	CN	First Affiliated Hospital Of Fujian Medical University	01 Oct 2015

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Clinical Result

Indication

Phase

Evaluation

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Study	Phase	Population	Analyzed Enrollment	Group	Results	Evaluation	Publication Date


Pubmed \| Eur J Nucl Med Mol Imaging	Not Applicable	Breast Cancer Neoadjuvant HER-2-positive	-	99mTc-3PRGD2	(cfaftukodo) = ovahmdhctc mxyvigydzo (kuupvjnsmi ) View more	-	01 Aug 2015
				99mTc-3PRGD2	(cfaftukodo) = qqjxqdwdhu mxyvigydzo (kuupvjnsmi ) View more
NCT01737112 (Pubmed \| J Biol Chem)	Early Phase 1	Lung Cancer	44	99mTc-3PRGD2	swjbertpvf(qeantpcjwy) = soffgbsuzd ujgbjygqjf (cndbrfyfkk ) View more	-	01 Jan 2014
				99mTc-MDP	swjbertpvf(qeantpcjwy) = dikldhkztr ujgbjygqjf (cndbrfyfkk ) View more
CSCO2022	Not Applicable	Refractory Differentiated Thyroid Gland Carcinoma	30	整合素受体 99Tcm-3PRGD2 (99Tcm-3PRGD2 SPECT/CT)	(hctvchsysy) = ttrggsyrcr dgoxzgiqzn (lpeshdjfxt, 74.8 - 92.1) View more	-	21 Sep 2022