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The edition · Diabetes & Endocrinology

Once a week is enough for the ketone strip

A modelling study on 1410 trial participants says weekly well-day ketone testing predicts a month's ketoacidosis risk as well as twice-weekly does; 179 of 180 ketoacidosis events in DCCT happened after C-peptide had gone; and compounded semaglutide vials are being recalled for particulate matter.

The edition in brief

Four findings for diabetes practice. Using the EASE 2 and EASE 3 trial repository of 1410 participants with type 1 diabetes, investigators simulated different frequencies of well-day capillary ketone testing over a month to predict ketoacidosis or severe ketosis in the following month. Once-weekly testing was the lowest frequency that preserved accuracy against a twice-weekly baseline - area under the curve 0.692 against 0.678 for the maximum-ketone model and 0.719 against 0.711 for a gradient-boosted tree, neither difference significant. In the DCCT repository, 1441 participants had 180 ketoacidosis events over an average 6.5 years; 179 of them occurred after stimulated C-peptide had fallen to 0.2 nmol/mL or below, and detectable C-peptide carried a hazard ratio of 0.07 (95% CI 0.01 to 0.48). The FDA has a Class II recall running on multiple compounded semaglutide multi-dose vials from a single US compounding firm, for particulate matter identified as nylon or polyamide and silk or proteinaceous material. A single-centre study of 68 people found that starting the Omnipod 5 hybrid closed loop in impaired awareness of hypoglycaemia reduced time below range from 2.8% to 1.7% and weekly sensor-detected hypoglycaemia episodes from 5.4 to 4.0, but at twelve months the burden remained about double that of matched people with normal awareness. And a multidisciplinary group has set out a roadmap for getting SGLT inhibitors licensed for heart and kidney protection in type 1 diabetes, arguing that surrogate endpoints could make registrational trials feasible provided ketoacidosis safety protocols are properly evaluated.

In this edition
01
Clinical update

Weekly ketone testing predicts as well as twice weekly

Once-weekly well-day capillary ketone testing predicted the next month's ketoacidosis risk as well as twice-weekly testing (AUC 0.692 vs 0.678, P=0.19), halving the burden for no measurable loss of accuracy.

2 min · Diabetes careRead →
Primary outcome
accuracy of different well-day capillary ketone testing frequencies over 1 month for predicting ketoacidosis or severe ketosis in the next month
Effect
once-weekly vs twice-weekly AUC 0.692 vs 0.678 (P=0.19) in maximum-ketone models and 0.719 vs 0.711 (P=0.38) in gradient-boosted tree models
02Clinical update

Ketoacidosis waits until the last C-peptide has gone

179 of 180 ketoacidosis events in DCCT occurred after stimulated C-peptide had fallen to 0.2 nmol/mL or below; detectable C-peptide carried a hazard ratio of 0.07 (95% CI 0.01 to 0.48).

2 min · Diabetes careRead →
03Regulatory

Compounded semaglutide vials recalled for particulate matter

An ongoing FDA Class II recall covers multiple compounded semaglutide multi-dose vials from one US compounding firm for particulate matter - ask patients what their GLP-1 product physically looks like, because a multi-dose vial is not a licensed presentation.

2 minRead →
04Research

Closed loop helps impaired awareness, but does not close the gap

Starting the Omnipod 5 hybrid closed loop in impaired awareness of hypoglycaemia cut time below range from 2.8% to 1.7% and weekly episodes from 5.4 to 4.0, but at twelve months the hypoglycaemia burden was still about double that of matched people with normal awareness.

2 min · Diabetes careRead →
05Pearl

Every insulin prescription needs a written sick-day plan

Give every patient on insulin a written sick-day plan with the specific numbers that mean seek help - and for anyone on an SGLT2 inhibitor, add an explicit instruction to pause it during acute illness and before surgery.

2 minRead →
06Practice changer

A roadmap for licensing SGLT inhibitors in type 1 diabetes

A joint endocrinology, nephrology and cardiology group argues that SGLT inhibitors could be licensed for heart and kidney disease in type 1 diabetes through surrogate-endpoint trials - provided ketoacidosis mitigation protocols, which currently lack rigorous evidence, are properly evaluated.

2 min · Diabetes careRead →

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