UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000062207
Receipt number R000070168
Scientific Title Menstrual Cycle-Related Changes in Insulin Sensitivity in Premenopausal Women with Type 1 Diabetes
Date of disclosure of the study information 2026/07/10
Last modified on 2026/07/10 18:05:46

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Basic information

Public title

Menstrual Cycle-Related Changes in Insulin Sensitivity in Premenopausal Women with Type 1 Diabetes

Acronym

Menstrual Cycle-Related Changes in Insulin Sensitivity in Premenopausal Women with Type 1 Diabetes

Scientific Title

Menstrual Cycle-Related Changes in Insulin Sensitivity in Premenopausal Women with Type 1 Diabetes

Scientific Title:Acronym

Menstrual Cycle-Related Changes in Insulin Sensitivity in Premenopausal Women with Type 1 Diabetes

Region

Japan


Condition

Condition

type 1 diabetes

Classification by specialty

Endocrinology and Metabolism

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

To characterize women with type 1 diabetes who exhibit a luteal phase-associated decline in insulin sensitivity and to elucidate the organ-specific mechanisms underlying this phenomenon, including alterations in insulin clearance

Basic objectives2

Others

Basic objectives -Others

Physiological Assessment of Menstrual Cycle-Related Organ-Specific Changes in Insulin Sensitivity

Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Menstrual Cycle-Related Changes in Skeletal Muscle Insulin Sensitivity

Key secondary outcomes



Base

Study type

Observational


Study design

Basic design


Randomization


Randomization unit


Blinding


Control


Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms


Purpose of intervention


Type of intervention


Interventions/Control_1


Interventions/Control_2


Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

18 years-old <=

Age-upper limit


Not applicable

Gender

Female

Key inclusion criteria

1) Premenopausal women diagnosed with type 1 diabetes
2) Patients receiving treatment with the MiniMed 780G advanced hybrid closed-loop system
3) Patients who are 18 years of age or older at the time of informed consent who have not reached menopause
4) Patients with regular menstrual cycles
5) Patients who, after receiving a sufficient explanation of the study and fully understanding its contents, provide written informed consent to participate of their own free will

Key exclusion criteria

1) Patients with type 2 diabetes or secondary diabetes
2) Patients with extremely poor glycemic control, defined as an HbA1c (NGSP) level of 10% or higher
3) Patients not receiving treatment with the MiniMed 780G advanced hybrid closed-loop system
4) Patients who are pregnant, breastfeeding, possibly pregnant, or planning pregnancy
5) Patients receiving hormonal contraception or hormone therapy
6) Patients receiving glucocorticoid therapy
7) Patients with systemic diseases that may affect glycemic profiles
8) Patients considered unsuitable for participation in the study by the investigator

Target sample size

20


Research contact person

Name of lead principal investigator

1st name Hideyoshi
Middle name
Last name Kaga

Organization

Juntendo University Graduate School of Medicine

Division name

Department of Metabolism & Endocrinology

Zip code

113-8421

Address

2-1-1 Hongo, Bunkyo-ku,Tokyo, Japan.

TEL

03-3811-3111

Email

hkaga@juntendo.ac.jp


Public contact

Name of contact person

1st name Hideyoshi
Middle name
Last name Kaga

Organization

Juntendo University Graduate School of Medicine

Division name

Department of Metabolism & Endocrinology

Zip code

113-8421

Address

2-1-1 Hongo, Bunkyo-ku,Tokyo, Japan.

TEL

03-3811-3111

Homepage URL


Email

hkaga@juntendo.ac.jp


Sponsor or person

Institute

Juntendo University

Institute

Department

Personal name



Funding Source

Organization

Manpei suzuki diabetes foundantion

Organization

Division

Category of Funding Organization

Non profit foundation

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Research Ethics Committee Faculty of Medicine, Juntendo University

Address

3-1-3 Hongo, Bunkyo-ku,Tokyo, Japan.

Tel

03-5802-1584

Email

hongo-rinri@juntendo.ac.jp


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions



Other administrative information

Date of disclosure of the study information

2026 Year 07 Month 10 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Enrolling by invitation

Date of protocol fixation

2026 Year 07 Month 07 Day

Date of IRB

2026 Year 07 Month 07 Day

Anticipated trial start date

2026 Year 07 Month 07 Day

Last follow-up date

2029 Year 03 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information

To characterize women with type 1 diabetes who exhibit a luteal phase-associated decline in insulin sensitivity and to elucidate the organ-specific mechanisms underlying this phenomenon, including alterations in insulin clearance


Management information

Registered date

2026 Year 07 Month 10 Day

Last modified on

2026 Year 07 Month 10 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000070168