Prospective Stage-Stratified Histopathologic Study and Proposed Disease-Evolution Model of Gluteal Permanent Synthetic Filler Complications
7 september 2026 uppdaterad av: Research Inc
This prospective biospecimen cohort will collect and analyze tissue from adults undergoing clinically indicated surgery for gluteal permanent synthetic filler disease.
Two blinded pathologists will score foreign material burden, inflammation, fibrosis, necrosis, vascular and lymphatic injury, and deep-tissue involvement.
Histopathologic severity will be compared across clinical-radiologic stages and time since injection.
The study will propose a cross-sectional disease-evolution framework and assess the reproducibility of the scoring system.
Studieöversikt
Status
Har inte rekryterat ännu
Betingelser
Detaljerad beskrivning
Participants will be enrolled before clinically indicated biopsy or filler-removal surgery.
Exposure history, symptoms, physical findings, and MRI stage will be recorded using standardized forms.
During surgery, samples from mapped tissue planes will be collected without extending the planned excision.
Two pathologists blinded to clinical stage will independently grade eight tissue-injury domains and generate a composite severity score.
Disagreements will undergo adjudication.
The study will evaluate associations between tissue findings, time since injection, and clinical-radiologic stage and will use exploratory clustering to identify histopathologic phenotypes.
Because participants are sampled at one operation, the resulting model will be described as a proposed cross-sectional natural-history framework.
Studietyp
Observationell
Inskrivning (Beräknad)
200
Kontakter och platser
Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.
Studiekontakt
- Namn: Edison Osorio, MD, Plastic surgeon
- Telefonnummer: +573226140611
- E-post: info@edisonosorio.com
Studieorter
-
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Antioquia
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Medellín, Antioquia, Colombia
- Clinica Bioforma
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Kontakt:
- Edison Osorio, MD, Plastic surgeon
- Telefonnummer: +573226140611
- E-post: info@edisonosorio.com
-
-
Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
- Vuxen
- Äldre vuxen
Tar emot friska volontärer
Nej
Testmetod
Icke-sannolikhetsprov
Studera befolkning
Adults undergoing biopsy or surgical removal of gluteal tissue affected by permanent synthetic filler, spanning early exposure through advanced disease with ulceration or necrosis.
Beskrivning
Inclusion Criteria:
Age 18 years or older.
- Prior gluteal injection of a permanent or unknown nonresorbable filler.
- Clinically indicated biopsy or surgical excision yielding tissue suitable for histopathologic evaluation.
- Available history of approximate injection date and standardized preoperative clinical staging.
- Written consent for tissue analysis and optional future use of deidentified specimens.
Exclusion Criteria:
- Specimen composed only of scar or skin without tissue from the filler-affected region.
- Insufficient tissue quality for routine histology.
- Acute bacterial infection that precludes distinction of the underlying chronic tissue response unless infection is itself a prespecified advanced-stage feature.
- Prior oncologic radiation to the sampled gluteal region.
- Declined consent for research use of surgical tissue.
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
Kohorter och interventioner
Grupp / Kohort |
Intervention / Behandling |
|---|---|
|
Prospective Histopathology Cohort
Samples will be obtained from predefined superficial, interface, deep, and visibly abnormal regions without extending the clinically indicated excision.
Each sample will be oriented and linked to an MRI/operative map.
|
Samples will be obtained from predefined superficial, interface, deep, and visibly abnormal regions without extending the clinically indicated excision.
Each sample will be oriented and linked to an MRI/operative map.
Linked arm/group(s): Prospective Histopathology Cohort.
Two pathologists will independently grade foreign material burden, granulomatous inflammation, fibrosis, fat necrosis, vascular injury, lymphatic involvement, muscle injury, and skin necrosis on 0-to-3 ordinal scales.
The proposed composite ranges from 0 to 24; the manual will be locked before the first analytic read.
Linked arm/group(s): Prospective Histopathology Cohort.
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Composite Histopathologic Severity Score by Clinical-Radiologic Stage
Tidsram: At the index operation and final blinded histopathology assessment of the surgical specimen. 3 months
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Sum of eight prespecified 0-to-3 domain scores: foreign material burden, granulomatous inflammation, fibrosis, fat necrosis, vascular injury, lymphatic involvement, muscle injury, and skin necrosis.
Total score ranges from 0 to 24; higher scores indicate more severe tissue injury.
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At the index operation and final blinded histopathology assessment of the surgical specimen. 3 months
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Prevalence of Individual Histopathologic Features
Tidsram: At final histopathology assessment of the index surgical specimen. 3 months
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Proportion of participants with each prespecified feature and distribution of each 0-to-3 domain grade.
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At final histopathology assessment of the index surgical specimen. 3 months
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Andra resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Histopathologic Phenotype Classification
Tidsram: After completion of tissue collection and database lock, using data from the index specimen. 1 year
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Data-driven clusters or latent classes based on the eight domains, integrated with clinical and MRI stage to generate a proposed disease-evolution framework.
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After completion of tissue collection and database lock, using data from the index specimen. 1 year
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Samarbetspartners och utredare
Det är här du hittar personer och organisationer som är involverade i denna studie.
Sponsor
Utredare
- Huvudutredare: Edison Osorio, MD, plastic surgery
Publikationer och användbara länkar
Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.
Allmänna publikationer
- Osorio E, Ramirez B, Herrera O, Suarez C, Ciro C, Varela A. Three-flap Technique: Comprehensive Approach for Biopolymer Removal in the Gluteal and Lumbar Regions. Plast Reconstr Surg Glob Open. 2026 Jul 23;14(7):e7870. doi: 10.1097/GOX.0000000000007870. eCollection 2026 Jul.
- Pachon Suarez JE, Tello VZR, Cifuentes RCR, Cuadros AMP, Salazar MC. Biopolymers: Histopathologic Case Series of Patients with Permanent Synthetic Fillers Presenting Chronic Granulomatous Reaction and Hypercalcemia. Plast Reconstr Surg Glob Open. 2024 Oct 15;12(10):e6159. doi: 10.1097/GOX.0000000000006159. eCollection 2024 Oct.
- Pachon Suarez JE, Salazar MC, Rizo VZ. Classification for Staging and Managing Patients with Biopolymer-induced Human Adjuvant Disease. Plast Reconstr Surg Glob Open. 2022 Feb 24;10(2):e4137. doi: 10.1097/GOX.0000000000004137. eCollection 2022 Feb.
- Xu T, Zhang J, Zhu Y, Zhao W, Pan C, Ma H, Zhang L. A poly(hydroxyethyl methacrylate)-Ag nanoparticle porous hydrogel for simultaneous in vivo prevention of the foreign-body reaction and bacterial infection. Nanotechnology. 2018 Sep 28;29(39):395101. doi: 10.1088/1361-6528/aad257. Epub 2018 Jul 10.
Studieavstämningsdatum
Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.
Studera stora datum
Studiestart (Beräknad)
1 oktober 2026
Primärt slutförande (Beräknad)
1 december 2027
Avslutad studie (Beräknad)
1 december 2027
Studieregistreringsdatum
Först inskickad
1 september 2026
Först inskickad som uppfyllde QC-kriterierna
7 september 2026
Första postat (Faktisk)
9 september 2026
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
9 september 2026
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
7 september 2026
Senast verifierad
1 september 2026
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- 009 (Nahrain Medical Research Collective (NMRC))
Plan för individuella deltagardata (IPD)
Planerar du att dela individuella deltagardata (IPD)?
NEJ
IPD-planbeskrivning
not considered in the informed consent of the patients
Läkemedels- och apparatinformation, studiedokument
Studerar en amerikansk FDA-reglerad läkemedelsprodukt
Nej
Studerar en amerikansk FDA-reglerad produktprodukt
Nej
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .