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Study identifier: NCT03582800 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Subcutaneous Injection of Sodium Thiosulfate for Ectopic Calcifications or Ossifications. A Pilot Study

Condition: Systemic Sclerosis · Dermatomyositis · iPPSD2  ·  Sponsor: University Hospital, Limoges

PhasePhase 2
Planned participants40
Who can joinAll sexes, 6 Months to no upper limit
Healthy volunteersNo

About this study

Ectopic soft tissue calcifications or ossifications can complicate the course of numerous diseases; most of them are rare or very rare. Even if the clinical, radiological and pathological presentation of ectopic calcifications and ossifications are different, the same hypotheses are discussed considering their hypothetical pathophysiology. Indeed, high calcium phosphate product, local cellular lesions and abnormal transdifferentiation of mesenchymal cells are regularly evoked when pathophysiology of such calcifications or ossifications are discussed. Apart from several case reports that have not been confirmed so far, no medical treatments are available, leading to significant pain and impairment of quality of life for patients. Therefore, only surgical treatment can be proposed when the volume or the consequences of these calcifications/ossifications become too important. Sodium thiosulfate (STS) is currently used as a cyanide poisoning antagonist and a chemoprotectant against adverse effects of several chemotherapies such as Cisplatin. Numerous case reports and several studies have revealed the potential interest of STS in the treatment of uremic induced vascular or soft tissues calcifications. Recently, our group has developed an expertise in the use of STS for the treatment of ectopic soft tissue calcifications or ossifications. Considering these promising preliminary data, and their limits, we developed a strategy to treat soft tissue calcifications or ossifications bas…

This description comes directly from the study's public registry record.

Talk to the study team

Vincent GUIGONIS, MD  ·  555056358  ·  vincent.guigonis@unilim.fr

Claire BAHANS  ·  claire.bahans@chu-limoges.fr

Always discuss trial participation with your own doctor first.

Locations (8)

CHU de BORDEAUXBordeaux, FranceRecruiting
Hospice Civil de LyonBron, FranceNot Yet Recruiting
ApHp - Hôpital BicêtreLe Kremlin-Bicêtre, FranceRecruiting
CHU de LimogesLimoges, FranceRecruiting
ApHp - hôpital LariboisièreParis, FranceRecruiting
Hôpital de la Pitié SalpétriêreParis, FranceNot Yet Recruiting
CHU de ROUENRouen, FranceNot Yet Recruiting
CHU de ToulouseToulouse, FranceRecruiting

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Source record: clinicaltrials.gov/study/NCT03582800