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Other Disclosures4552JCR Pharmaceuticals Co.,Ltd.Pharmaceuticals

Notice Regarding the Initiation of a Phase III Trial to Compare Doses of the Existing Formulation, Growject Subcutaneous Injection 12 mg

For the existing growth hormone product Growject Subcutaneous Injection 12 mg, the company initiated a Phase III comparative trial to enable dose adjustment according to patient response in Japan and administered the first dose to the first participant.

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Announced details

Growject Subcutaneous Injection 12 mg
Applicable field (uses covered by this announcement)

Treatment of pediatric patients with short stature due to growth hormone deficiency

Launch dateThe first dose was administered to the first participant on 13 April 2026 (completed)
What the company reported numerically
Quantitative Effects

The efficacy and safety of continuous administration of this product at 0.3 mg/kg/week will be comparatively evaluated by testing its superiority over 0.175 mg/kg/week

Usage history

Launched in Japan in 1995

Registration number and expiry date

Trial JR-401G-301, jRCT2051250213

In this announcement the company addresses none of Contract Value / Offering price / Impact on Business Performance.

Source (materials cited by the company)

Tanaka T. Changes, limitations, and prospects of adult height in GH treatment for Japanese GHD patients. Clin Pediatr Endocrinol. 2022;31(4):211-24.

Announced details
ItemDetails
Names of Products / Services CoveredGrowject Subcutaneous Injection 12 mg
Launch dateThe first dose was administered to the first participant on 13 April 2026 (completed)
Applicable areaTreatment of pediatric patients with short stature due to growth hormone deficiency
Registration number and expiry dateTrial JR-401G-301, jRCT2051250213
Quantitative EffectsThe efficacy and safety of continuous administration of this product at 0.3 mg/kg/week will be comparatively evaluated by testing its superiority over 0.175 mg/kg/week
Usage historyLaunched in Japan in 1995
SourceTanaka T. Changes, limitations, and prospects of adult height in GH treatment for Japanese GHD patients. Clin Pediatr Endocrinol. 2022;31(4):211-24.
Items this document does not state (11)
CounterpartyCounterparty overviewRelationship with the CompanyContract ValueOffering priceContract DateAward/certification nameAwarding / certifying bodyLocationLocation scaleImpact on Business Performance

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

To bridge the gap between the approved dosage and administration regimens in Japan and overseas and develop a regimen that allows dose adjustment in Japan. The company expects this to further improve final height and quality of life.

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Notice Regarding the Initiation of a Phase III Trial to Compare Doses of the Existing Formulation, Growject Subcutaneous Injection 12 mg | JCR Pharmaceuticals Co.,Ltd. (4552) timely disclosure | Komori