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Taking peoplePhase 1/2

Tests a light-activated treatment for recurrent prostate cancer

Tests a light and drug treatment in adults with recurring prostate cancer.

Key facts

Who runs it
SpectraCure AB (publ)
Where
Brunswick, GermanySee the siteAlso in 1 other country, 1 site
Registry title
Study to assess the safety and efficacy of the SpectraCure P18 System
Status
Recruiting
Phase
Phase 1/2
People taking part
26 people, planned
Started
1 Mar 2024
Expected to end
30 Apr 2028
Type of study
Interventional
Record updated
27 October 2026

Who can take part

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

The trial is looking for men over 18 whose prostate cancer came back in the prostate after radiation therapy. The treatment uses a light-activated drug (verteporfin) and laser light.

Age
Over 18 years.
Sex
Men only.
Disease stage
Prostate cancer that came back in the same place, confirmed by tissue examination. The area to treat is smaller than 50 cm3. Spread to nearby or distant parts of the body is not allowed (checked by PSMA PET in phase 2).
Earlier treatment
Must have had external or internal high dose-rate (brachy) radiation therapy for localized prostate cancer. Seed implantation brachytherapy is not allowed. Phase 1: cannot have surgery or radiation meant to remove all of the disease.
Biomarker or test result
Not stated. Blood tests must show enough bone marrow, kidney and liver function (for example platelets ≥ 100,000/mm3 and creatinine ≤ 1.5 mg /dl).

Main reasons for not taking part

  • Cancer that has grown outside the prostate (T3/T4) or spread to other parts of the body
  • Earlier seed implantation brachytherapy
  • Allergy to verteporfin or porphyrins, or porphyria or other light-sensitive disease
  • Surgery less than 1 week ago, or an infection at the moment
  • Taking part in another treatment study within 3 months

The registry criteria, word for word

Show all 46 criteriaShow less

Who can take part

  • Phase 1: Subjects > 18 years who have gone through external or internal, high dose-rate (brachy) radiation therapy for localized prostate cancer with histopathologically verified local recurrence
  • Phase 2: Subjects > 18 years who have gone through external or internal, high dose-rate (brachy) radiation therapy for localized prostate cancer with histopathologically verified local recurrence
  • Phase 2: Treatment target volume less than 50 cm3
  • Phase 2: Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • Phase 2: Expected survival ≥ 12 months
  • Phase 2: Sufficient bone marrow reserve as indicated by; granulocyte count ≥ 1500/mm3, platelet count ≥ 100,000/mm3
  • Phase 2: Adequate renal function as defined by creatinine ≤ 1.5 mg /dl
  • Phase 2: Adequate hepatic function, based on a total bilirubin ≤ 1.5 mg/dl, serum glutamateoxaloacetate transaminase (SGOT) ≤ 3 times the upper limit of normal, and alanine transaminase (ALT) ≤ 3 times the upper limit of normal
  • Phase 2: Signed Informed Consent
  • Phase 1: Treatment target volume less than 50 cm3 defined by transrectal ultrasound
  • Phase 1: Subject not eligible for surgery or curative radiotherapy
  • Phase 1: Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • Phase 1: Expected survival ≥ 8 months
  • Phase 1: Sufficient bone marrow reserve as indicated by; granulocyte count ≥ 1500/mm3, platelet count ≥ 100,000/mm3
  • Phase 1: Adequate renal function as defined by creatinine ≤ 1.5 mg /dl
  • Phase 1: Adequate hepatic function, based on a total bilirubin ≤ 1.5 mg/dl, serum glutamateoxaloacetate transaminase (SGOT) ≤ 3 times the upper limit of normal, and alanine transaminase (ALT) ≤ 3 times the upper limit of normal
  • Phase 1: Signed Informed Consent

Who cannot take part

  • Phase 1: Less than 1 week since surgery (excluding minimal procedures, e.g. vascular access device insertion)
  • Phase 1: Concomitant infection
  • Phase 1: Subjects with other severe concurrent disease that in the judgement of the investigator would make the subject inappropriate for entry into this study
  • Phase 2: Subjects who have been treated with seed implantation brachytherapy
  • Phase 2: Less than 1 week since surgery (excluding minimal procedures, e.g. vascular access device insertion)
  • Phase 2: Concomitant infection
  • Phase 2: Subjects with other severe concurrent disease that in the judgement of the investigator would make the subject inappropriate for entry into this study
  • Phase 2: On-going therapy with a photosensitizing agent
  • Phase 2: Enrollment in another therapeutic clinical study within 3 months prior to randomization and throughout the study
  • Phase 1: On-going therapy with a photosensitizing agent
  • Phase 1: Enrollment in another therapeutic clinical study within 3 months prior to randomization and throughout the study
  • Phase 1: Patients who have been treated with seed implantation brachytherapy
  • Phase 1: Patients with locally advanced (AJCC 7th edition T3/T4) or metastatic disease
  • Phase 1: Mental incapacity or psychiatric illness that would interfere with the subject’s ability to understand and give informed consent or to complete follow-up visits according to the judgement of the investigator
  • Phase 1: Porphyria or other diseases exacerbated by light
  • Phase 2: Subjects with locally advanced (AJCC 7th edition T3/T4), regional pelvic lymph node metastasis, or metastatic disease defined by PSMA PET
  • Phase 1: Known hypersensitivity to verteporfin for injection (VFI) or to any of the excipients
  • Phase 2: Mental incapacity or psychiatric illness that would interfere with the subject’s ability to understand and give informed consent or to complete follow-up visits according to the judgement of the investigator
  • Phase 2: Porphyria or other diseases exacerbated by light
  • Phase 2: Known hypersensitivity to verteporfin for injection (VFI) or to any of the excipients
  • Phase 2: Known allergies to porphyrins
  • Phase 1: Known allergies to porphyrins
  • Phase 1: Subjects with a history of CTCAE v4 grade 3 or greater or persistent (>1 separate episodes or symptoms lasting more than 3 months after initiation of medical intervention) grade 2 proctitis attributed to radiation
  • Phase 1: Contraindication for MRI/Gadolinium contrast such as: implants, severe renal impairment (glomerular filtration rate [GFR] <30 mL/min/1.73m2, or previous contrast reactions
  • Phase 1: Contraindication for photosensitizer
  • Phase 2: Contraindication for photosensitizer
  • Phase 2: Tumours known to be eroding into a major blood vessel in or adjacent to the illumination site
  • Phase 1: Tumours known to be eroding into a major blood vessel in or adjacent to the illumination site
  • Phase 1: Gleason score 10 at initial diagnosis

Where in Germany

Also in 1 other country, 1 site

  • Staedtisches Klinikum Braunschweig gGmbHBrunswick, GermanyNo longer taking part

About the trial

What the trial wants to find out

(i) demonstrate that the use of the SpectraCure P18 System (Interstitial multiple diode lasers and IDOSE® Software) and verteporfin for injection (VFI) is a safe treatment for patients with recurrent prostate cancer, and (ii) demonstrate that the SpectraCure P18 System (Interstitial multiple diode lasers and IDOSE® Software) is able to calculate, deliver and control the required light dose for elimination of cancer cells in locally recurrent prostate cancer tumours, and (iii) demonstrate that the SpectraCure P18 System (Interstitial multiple diode lasers and IDOSE® Software) is able to calculate the precise positioning of the fibers for maximum effective light delivery, and (iv) determine the lowest safe and effective drug dose as well as the lowest safe and effective light dose as determined by MRI response and adverse events. (v) ascertain the dose level and assess clinical efficacy of the SpectraCure P18 System (Interstitial multiple diode lasers and IDOSE® Software) and verteporfin for injection (VFI) for treatment of recurrent prostate cancer.

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record

Print a page for my doctor

Data and sources

Registry record
Listed on the EU's official list of trials (CTIS).
Official title
Open-label clinical phase 1/2 study to assess the safety and efficacy of the SpectraCure P18 System (Interstitial multiple diode lasers and IDOSE® Software) and verteporfin for injection (VFI) for the treatment of recurrent prostate cancer
Plain-language title
Tests a light-activated treatment for recurrent prostate cancerGenerated from the registry record. The registry title is the official one.
AI summary
From the trial's eligibility criteria. Read by machine on 9 November 2026.
Record updated
27 October 2026