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CompletedNCT06845891CAPSDM1Updated Sep 17, 2026

Clinical Study: Analysis of Glycemic Control and Satisfaction With a Connected Smart Cap in Patients With Type 1 Diabetes Mellitus

An interventional study of CONNECTED SMART CAP in Type 1 Diabetes Mellitus, Type 1 Diabetes Mellitus (T1DM) and Diabetes Management, sponsored by Fernando Sebastián Valles. Completed at 1 site in Spain. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-17.

Sponsored by Fernando Sebastián Valles · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
42
Allocation
Randomized
Ages
18 Years and older
Sex
All
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Study summary

This clinical study evaluates the impact of the Cap INSULCLOCK device on glycemic control, treatment adherence, and patient satisfaction in adults with type 1 diabetes mellitus (T1DM). Despite advances in pharmacology and technology, a significant proportion of individuals with T1DM fail to achieve recommended glycemic targets, partly due to the complexity of insulin therapy and suboptimal adherence. Cap INSULCLOCK is a device that attaches to insulin pens, automatically recording injections and integrating data on glucose levels, insulin administration, food intake, and physical activity, with real-time Bluetooth transmission. Its use may enhance adherence and optimize metabolic control.

This study is a randomized, low-intervention clinical trial conducted at a single center, enrolling 42 patients, who will be randomized into two groups: one using the activated device and a control group using the device in a blinded mode. The primary objective is to assess differences in time above range (TAR >180 mg/dL) over the last 14 days of continuous glucose monitoring (CGM). Secondary objectives include evaluating HbA1c levels, time in range (TIR), frequency of hypoglycemic episodes, and patient satisfaction. Data will be analyzed using advanced statistical methods, and the intervention is expected to improve adherence, reduce glycemic variability, and enhance quality of life in individuals with T1DM

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Conditions studied

  • Type 1 Diabetes Mellitus
  • Type 1 Diabetes Mellitus (T1DM)
  • Diabetes Management

Keywords

  • diabetes tecnhology
  • Type 1 diabetes
  • Smart cap
  • Time above range
03

In context

Diabetes Mellitus, Type 1

3,522 studies on the registry are indexed under Diabetes Mellitus, Type 1; 577 are open to participants now.

This study's enrollment of 42 is close to the median of 40 across 2,649 interventional studies indexed under Diabetes Mellitus, Type 1.

Browse Diabetes Mellitus, Type 1 studies →

Lead sponsor

This is the only study on the registry with Fernando Sebastián Valles as lead sponsor.

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

04

Who can participate

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

Inclusion criteria

  • Men and women aged 18 years or older.
  • Diagnosis of type 1 diabetes mellitus (T1DM).
  • Users of flash continuous glucose monitoring (FGM) sensors with >70% of recorded data, including intake and insulin dose logs.
  • Adequate therapeutic adherence, with no missed appointments in the past year.
  • Time above range (TAR >180 mg/dL) >25%.
  • Ability to provide informed consent to participate in the study.
  • Access to technology for follow-up, including a smartphone with internet connectivity and compatibility with the Insulcloud app.

Exclusion criteria

Exclusion Criteria:

  • Current pregnancy.
  • Severe acute illness.
  • Exclusion criteria for the use of real-time continuous glucose monitoring (RT-CGM) systems as per the Framework Agreement of the Community of Madrid for RT-CGM use (SERMAS).
  • Inability to provide informed consent or to meet the study requirements for any reason.
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
42 participants (actual)

Study arms

  • Experimental
    Connected smart cap

    This arm will have access to the cap, which is connected to the digital application that records the timing of insulin injections and provides reminders in case of missed doses.

    Device: CONNECTED SMART CAP

  • Active comparator
    cap disconnected

    This treatment arm will receive the cap without connectivity, thereby lacking access to the information provided by the digital application, including the timing of insulin injections, injection events, and reminder notifications.

    Device: CONNECTED SMART CAP

Interventions

  • DeviceCONNECTED SMART CAP

    The intervention in this study consists of attaching a smart cap to the insulin pen of individuals with type 1 diabetes who use flash glucose monitoring and experience a time above range (TAR \>180 mg/dL) for more than 25% of the time. This metric has been associated with diabetes-related complications, and the objective of this study is to determine whether this simple device could help reduce this underexplored parameter.

06

What researchers measure

Primary outcomes

  1. Time Above Range >180 mg/dL

    Time Above Range (TAR) refers to the percentage of time that an individual's glucose levels exceed 180 mg/dL during a given period, in this case, the last 14 days as recorded by a continuous or flash glucose monitoring system. This metric reflects hyperglycemic burden and has been associated with an increased risk of diabetes-related complications. Clinical guidelines generally recommend keeping TAR below 25% to optimize glycemic control and reduce long-term adverse outcomes.

    Time frame: 14 days

Secondary outcomes

  1. Time in range (70 - 180 mg/dL),

    Time in Range (TIR) refers to the percentage of time an individual's glucose levels remain within the target range of 70-180 mg/dL over the last 14 days, as recorded by a continuous or flash glucose monitoring system. TIR is a key glycemic metric reflecting overall glucose control, with higher percentages being associated with a lower risk of diabetes-related complications. Clinical guidelines recommend maintaining TIR above 70% as a primary therapeutic goal for individuals with diabetes.

    Time frame: 14 days

07

Study locations

1 site
  • Hospital Universitario de La Princesa
    Madrid, Madrid 28006, Spain
08

References and documents

Publications

  • Sebastian-Valles F, Sager-La Ganga C, Justel Enriquez A, Jimenez Blanco S, Navas-Moreno V, Arranz Martin JA, Marazuela M. Analysis of glycaemic control and treatment satisfaction with a connected smart pen cap in adults with type 1 diabetes: a randomised, open-label, parallel-group trial. Diabetologia. 2026 May;69(5):1191-1204. doi: 10.1007/s00125-026-06674-w. Epub 2026 Feb 3. PubMed 41634174 ↗

Study documents

  • Protocol and statistical analysis plan · Sep 28, 2025

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No — The individual participant data (IPD) will not be shared due to ethical and regulatory considerations regarding patient confidentiality

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 17, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06845891
Lead sponsor
Fernando Sebastián Valles
Responsible party
Fernando Sebastián Valles (Medical doctor, Fundación de Investigación Biomédica - Hospital Universitario de La Princesa) — Sponsor-investigator
First posted
Feb 25, 2025
Start date
Feb 26, 2025
Primary completion
Jun 19, 2025
Completion
Jun 19, 2025
Last update
Sep 17, 2026

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

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

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