Evidence map›Paper›PMID 30955221›Full record

ArticleDiabetic medicine : a journal of the British Diabetic Association2019

Persistent C-peptide is associated with reduced hypoglycaemia but not HbA

S M Marren, S Hammersley, T J McDonald, B M Shields, B A Knight, A Hill, R Bolt, T I Tree, B O Roep, A T Hattersley and 3 more

2 registry-linked trialsOpen access · hybridAbstract read
In one paragraph

Article in Diabetic medicine : a journal of the British Diabetic Association, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
5.7field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03490773 completednot on this map

Assessing Genetic and Immunological Predictors of Endogenous Insulin Production in Type 1 Diabetes

TypeobservationalSponsorRoyal Devon and Exeter NHS Foundation TrustRan2014 to 2021Enrolled287ConditionsType 1 Diabetes Mellitus
NCT05616273 completednot on this mapstarted 2023, after this paper: background citation

Stimulated Glucagon as a Biomarker of Hypoglycemic Risk in Type 1 Diabetes

TypeobservationalSponsorUniversity of ExeterRan2023 to 2025Enrolled62ConditionsType 1 Diabetes, HypoglycemiaArmsMixed Meal Tolerance Test (MMTT), Arginine Stimulation Test (AST), Home Finger Prick Sample
3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 37 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 3 institutions in 3 countries.

S M MarrenInstitute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, Exeter, UK.
S HammersleyNIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter, UK.
T J McDonaldInstitute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, Exeter, UK.ORCID 0000-0003-3559-6660
B M ShieldsInstitute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, Exeter, UK.ORCID 0000-0003-3785-327X
B A KnightNIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter, UK.
A HillNIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter, UK.ORCID 0000-0002-0901-4834
R BoltNIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter, UK.
T I TreeDepartment of Immunobiology, School of Immunobiology & Microbial Sciences, Kings College London, London, UK.ORCID 0000-0002-6973-5377
B O RoepDepartment of Diabetes Immunology, Diabetes & Metabolism Research Institute at the City of Hope National Medical Center, Duarte, CA, USA.ORCID 0000-0002-3110-7391
A T HattersleyInstitute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, Exeter, UK.ORCID 0000-0001-5620-473X
A G JonesInstitute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, Exeter, UK.ORCID 0000-0002-0883-7599
R A OramInstitute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, Exeter, UK.ORCID 0000-0003-3581-8980
TIGI consortium
University of Exeter · GBCity Of Hope National Medical Center · USKing's College London · GB

Funding

Wellcome Trust 098395/Z/12/Z
6 · The paper itself

Abstract

aimsMost people with Type 1 diabetes have low levels of persistent endogenous insulin production. The Diabetes Control and Complications Trial showed that close to diagnosis preserved endogenous insulin was associated with lower HbA

methodsWe conducted a cross-sectional case-control study of 221 people (median age 24 years) with Type 1 diabetes. We confirmed ongoing endogenous insulin secretion by measuring C-peptide after a mixed-meal tolerance test. We compared self-reported hypoglycaemia (n = 160), HbA

resultsStimulated median (IQR) C-peptide was 114 (43, 273) pmol/l and < 3 (< 3, < 3) pmol/l in those with preserved and low C-peptide respectively. Participants with preserved C-peptide had lower reported monthly rates of hypoglycaemia, with 21% fewer symptomatic episodes, 5.9 vs. 7.5 [incidence rate ratio (IRR) 0.79, P = 0.001], and 65% fewer asymptomatic episodes, 1.0 vs. 2.9 (IRR 0.35, P < 0.001). Those with preserved C-peptide had a lower insulin dose (0.68 vs. 0.81 units/kg, P = 0.01) but similar HbA

conclusionsAdults with Type 1 diabetes and preserved endogenous insulin production receiving usual care in the UK have lower daily insulin doses and fewer self-reported hypoglycaemic episodes, but no difference in HbA

Indexed as

AdolescentAdultBlood GlucoseBlood Glucose Self-MonitoringCase-Control StudiesC-PeptideCross-Sectional StudiesDiabetes Mellitus, Type 1FemaleGlycated HemoglobinHumansHypoglycemiaHypoglycemic AgentsMalePractice Patterns, Physicians'United KingdomBlood GlucoseC-PeptideGlycated HemoglobinHypoglycemic Agents

Identifiers

PMID30955221
PMCPMC6790586
OpenAlexW2929026664

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.