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CompletedNCT01054092Updated May 30, 2025

A Study to Assess the Long-term Safety and Efficacy of ASP1941 in Japanese Diabetic Patients

A Phase 3 interventional study of ipragliflozin in Type 2 Diabetes Mellitus, sponsored by Astellas Pharma Inc. Completed at 7 sites in Japan. Open to participants aged 20 Years and older. Per ClinicalTrials.gov, last updated 2025-05-30.

Sponsored by Astellas Pharma Inc · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
182
Allocation
Randomized
Ages
20 Years and older
Sex
All
01

Study summary

The primary objective of this study is to evaluate the long-term safety of ASP1941 in patients with type 2 diabetes mellitus. The second objectives are to compare the efficacy and pharmacokinetics of ASP1941 administered before or after food intake.

Read the detailed description

Subject will be randomized into either ASP1941 before meal or ASP1941 after meal groups. Subjects will undergo a screening period before entering the long-term treatment. Dosage may be increased during the treatment period if subjects fulfill increasing criteria and the investigators adjudicate that no impact for subjects safety.

02

Conditions studied

  • Type 2 Diabetes Mellitus

Keywords

  • Blood glucose
  • ASP1941
  • Food effect
  • Diabetes mellitus
03

In context

Diabetes Mellitus

10,925 studies on the registry are indexed under Diabetes Mellitus; 1,319 are open to participants now.

This study's enrollment of 182 is above the median of 80 across 8,367 interventional studies indexed under Diabetes Mellitus.

Browse Diabetes Mellitus studies →

Lead sponsor

Astellas Pharma Inc is the lead sponsor of 512 studies on the registry; 4 are open to participants now.

Of its 27 completed or terminated interventional studies of FDA-regulated products, 19 (70%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Type 2 diabetic patients for at least 12 weeks
  • HbA1c value between 6.5 and 9.5%
  • Body Mass Index ( BMI )20.0 - 45.0kg/m2

Exclusion criteria

Exclusion Criteria:

  • Type 1 diabetes mellitus patients
  • Serum creatinine > upper limit of normal
  • Proteinuria (albumin/creatinine ratio > 300mg/g)
  • Dysuria and/or urinary tract infection, genital infection
  • Significant renal, hepatic or cardiovascular diseases
  • Severe gastrointestinal diseases
  • Proliferative diabetic retinopathy
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
182 participants (actual)

Study arms

  • Experimental
    before meal group

    ASP1941 will be administered before meal

    Drug: ipragliflozin

  • Experimental
    after meal group

    ASP1941 will be administered after meal

    Drug: ipragliflozin

Interventions

  • Drugipragliflozin

    oral

    Also known as: ASP1941

06

What researchers measure

Primary outcomes

  1. HbA1c

    Time frame: For 52 weeks

Secondary outcomes

  1. Fasting plasma glucose

    Time frame: For 52 weeks

  2. Fasting serum insulin

    Time frame: For 52 weeks

  3. Plasma levels of ASP1941 for population PK analysis

    Time frame: For 52 weeks

  4. Safety assessed by adverse events, vital signs laboratory tests and 12-lead ECGs

    Time frame: For 52 weeks

07

Study locations

7 sites
  • Chubu, Japan
  • Chugoku, Japan
  • Hokkaido, Japan
  • Kansai, Japan
  • Kantou, Japan
  • Kyushu, Japan
  • Touhoku, Japan
08

References and documents

Individual participant data

Plan to share: No — Access to anonymized individual participant level data will not be provided for this trial. Further details on Astellas' data sharing policy can be found at https://www.clinicaltrials.astellas.com/transparency/.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 30, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01054092
Lead sponsor
Astellas Pharma Inc
Responsible party
Sponsor
First posted
Jan 22, 2010
Start date
Jan 14, 2010
Primary completion
Jul 22, 2011
Completion
Jul 22, 2011
Last update
May 30, 2025

Study contacts

Use Central Contact
study chair · Astellas Pharma Inc

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2025. You cannot join it, but the record below documents what was studied.

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