Plasma phosphate and all-cause mortality in individuals with and without type 2 diabetes: the Dutch population-based lifelines cohort study

Amarens van der Vaart; Qingqing Cai; Ilja M Nolte; André P J van Beek; Gerjan Navis; Stephan J L Bakker; Peter R van Dijk; Martin H de Borst

doi:10.1186/s12933-022-01499-4

Plasma phosphate and all-cause mortality in individuals with and without type 2 diabetes: the Dutch population-based lifelines cohort study

Amarens van der Vaart^*, Qingqing Cai, Ilja M Nolte, André P J van Beek, Gerjan Navis, Stephan J L Bakker, Peter R van Dijk, Martin H de Borst

^*Corresponding author for this work

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Abstract

INTRODUCTION: Individuals with type 2 diabetes have a substantially elevated cardiovascular risk. A higher plasma phosphate level promotes vascular calcification, which may adversely affect outcomes in individuals with type 2 diabetes. We hypothesized that the association between plasma phosphate and all-cause mortality is stronger in individuals with type 2 diabetes, compared to those without diabetes.

METHODS: We analysed the association between plasma phosphate and all-cause mortality in the Dutch population-based Lifelines cohort and in subgroups with and without type 2 diabetes, using multivariable Cox regression adjusted for potential confounders. Effect modification was tested using multiplicative interaction terms.

RESULTS: We included 57,170 individuals with 9.4 [8.8-10.4] years follow-up. Individuals within the highest phosphate tertile (range 1.00-1.83 mmol/L) were at higher risk of all-cause mortality (fully adjusted HR 1.18 [95% CI 1.02-1.36], p = 0.02), compared with the intermediate tertile (range 0.85-0.99 mmol/L). We found significant effect modification by baseline type 2 diabetes status (p-interaction = 0.003). Within the type 2 diabetes subgroup (N = 1790), individuals within the highest plasma phosphate tertile had an increased mortality risk (HR 1.73 [95% CI 1.10-2.72], p = 0.02 vs intermediate tertile). In individuals without diabetes at baseline (N = 55,380), phosphate was not associated with mortality (HR 1.12 [95% CI 0.96-1.31], p = 0.14). Results were similar after excluding individuals with eGFR < 60 mL/min/1.73 m2.

DISCUSSION: High-normal plasma phosphate levels were associated with all-cause mortality in individuals with type 2 diabetes. The association was weaker and non-significant in those without diabetes. Measurement of phosphate levels should be considered in type 2 diabetes; whether lowering phosphate levels can improve health outcomes in diabetes requires further study.

Original language	English
Article number	61
Number of pages	10
Journal	Cardiovascular Diabetology
Volume	21
Issue number	1
DOIs	https://doi.org/10.1186/s12933-022-01499-4
Publication status	Published - 27-Apr-2022

Keywords

Cohort Studies
Diabetes Mellitus, Type 2
Ethnicity
Humans
Phosphates
Vascular Calcification/complications

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Bakker, S. (Creator), Dotinga, A. (Creator), Vonk, J. (Creator), Smidt, N. (Creator), Scholtens, S. (Creator), Swertz, M. (Creator), Wijmenga, C. (Creator), Wolffenbuttel, B. (Creator), Stolk, R. (Creator), van Zon, S. (Creator), Rosmalen, J. (Creator), Postma, D. S. (Creator), de Boer, R. (Creator), Navis, G. (Creator), Slaets, J. (Creator), Ormel, H. (Creator), van Dijk, F. (Creator) & Bolmer, B. (Data Manager), Lifelines, 2006
https://www.lifelines.nl/ and one more link, https://catalogue.lifelines.nl/ (show fewer)
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title = "Plasma phosphate and all-cause mortality in individuals with and without type 2 diabetes: the Dutch population-based lifelines cohort study",

abstract = "INTRODUCTION: Individuals with type 2 diabetes have a substantially elevated cardiovascular risk. A higher plasma phosphate level promotes vascular calcification, which may adversely affect outcomes in individuals with type 2 diabetes. We hypothesized that the association between plasma phosphate and all-cause mortality is stronger in individuals with type 2 diabetes, compared to those without diabetes.METHODS: We analysed the association between plasma phosphate and all-cause mortality in the Dutch population-based Lifelines cohort and in subgroups with and without type 2 diabetes, using multivariable Cox regression adjusted for potential confounders. Effect modification was tested using multiplicative interaction terms.RESULTS: We included 57,170 individuals with 9.4 [8.8-10.4] years follow-up. Individuals within the highest phosphate tertile (range 1.00-1.83 mmol/L) were at higher risk of all-cause mortality (fully adjusted HR 1.18 [95% CI 1.02-1.36], p = 0.02), compared with the intermediate tertile (range 0.85-0.99 mmol/L). We found significant effect modification by baseline type 2 diabetes status (p-interaction = 0.003). Within the type 2 diabetes subgroup (N = 1790), individuals within the highest plasma phosphate tertile had an increased mortality risk (HR 1.73 [95% CI 1.10-2.72], p = 0.02 vs intermediate tertile). In individuals without diabetes at baseline (N = 55,380), phosphate was not associated with mortality (HR 1.12 [95% CI 0.96-1.31], p = 0.14). Results were similar after excluding individuals with eGFR < 60 mL/min/1.73 m2.DISCUSSION: High-normal plasma phosphate levels were associated with all-cause mortality in individuals with type 2 diabetes. The association was weaker and non-significant in those without diabetes. Measurement of phosphate levels should be considered in type 2 diabetes; whether lowering phosphate levels can improve health outcomes in diabetes requires further study.",

keywords = "Cohort Studies, Diabetes Mellitus, Type 2, Ethnicity, Humans, Phosphates, Vascular Calcification/complications",

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doi = "10.1186/s12933-022-01499-4",

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T1 - Plasma phosphate and all-cause mortality in individuals with and without type 2 diabetes

T2 - the Dutch population-based lifelines cohort study

AU - van der Vaart, Amarens

AU - Cai, Qingqing

AU - Nolte, Ilja M

AU - van Beek, André P J

AU - Navis, Gerjan

AU - Bakker, Stephan J L

AU - van Dijk, Peter R

AU - de Borst, Martin H

PY - 2022/4/27

Y1 - 2022/4/27

N2 - INTRODUCTION: Individuals with type 2 diabetes have a substantially elevated cardiovascular risk. A higher plasma phosphate level promotes vascular calcification, which may adversely affect outcomes in individuals with type 2 diabetes. We hypothesized that the association between plasma phosphate and all-cause mortality is stronger in individuals with type 2 diabetes, compared to those without diabetes.METHODS: We analysed the association between plasma phosphate and all-cause mortality in the Dutch population-based Lifelines cohort and in subgroups with and without type 2 diabetes, using multivariable Cox regression adjusted for potential confounders. Effect modification was tested using multiplicative interaction terms.RESULTS: We included 57,170 individuals with 9.4 [8.8-10.4] years follow-up. Individuals within the highest phosphate tertile (range 1.00-1.83 mmol/L) were at higher risk of all-cause mortality (fully adjusted HR 1.18 [95% CI 1.02-1.36], p = 0.02), compared with the intermediate tertile (range 0.85-0.99 mmol/L). We found significant effect modification by baseline type 2 diabetes status (p-interaction = 0.003). Within the type 2 diabetes subgroup (N = 1790), individuals within the highest plasma phosphate tertile had an increased mortality risk (HR 1.73 [95% CI 1.10-2.72], p = 0.02 vs intermediate tertile). In individuals without diabetes at baseline (N = 55,380), phosphate was not associated with mortality (HR 1.12 [95% CI 0.96-1.31], p = 0.14). Results were similar after excluding individuals with eGFR < 60 mL/min/1.73 m2.DISCUSSION: High-normal plasma phosphate levels were associated with all-cause mortality in individuals with type 2 diabetes. The association was weaker and non-significant in those without diabetes. Measurement of phosphate levels should be considered in type 2 diabetes; whether lowering phosphate levels can improve health outcomes in diabetes requires further study.

AB - INTRODUCTION: Individuals with type 2 diabetes have a substantially elevated cardiovascular risk. A higher plasma phosphate level promotes vascular calcification, which may adversely affect outcomes in individuals with type 2 diabetes. We hypothesized that the association between plasma phosphate and all-cause mortality is stronger in individuals with type 2 diabetes, compared to those without diabetes.METHODS: We analysed the association between plasma phosphate and all-cause mortality in the Dutch population-based Lifelines cohort and in subgroups with and without type 2 diabetes, using multivariable Cox regression adjusted for potential confounders. Effect modification was tested using multiplicative interaction terms.RESULTS: We included 57,170 individuals with 9.4 [8.8-10.4] years follow-up. Individuals within the highest phosphate tertile (range 1.00-1.83 mmol/L) were at higher risk of all-cause mortality (fully adjusted HR 1.18 [95% CI 1.02-1.36], p = 0.02), compared with the intermediate tertile (range 0.85-0.99 mmol/L). We found significant effect modification by baseline type 2 diabetes status (p-interaction = 0.003). Within the type 2 diabetes subgroup (N = 1790), individuals within the highest plasma phosphate tertile had an increased mortality risk (HR 1.73 [95% CI 1.10-2.72], p = 0.02 vs intermediate tertile). In individuals without diabetes at baseline (N = 55,380), phosphate was not associated with mortality (HR 1.12 [95% CI 0.96-1.31], p = 0.14). Results were similar after excluding individuals with eGFR < 60 mL/min/1.73 m2.DISCUSSION: High-normal plasma phosphate levels were associated with all-cause mortality in individuals with type 2 diabetes. The association was weaker and non-significant in those without diabetes. Measurement of phosphate levels should be considered in type 2 diabetes; whether lowering phosphate levels can improve health outcomes in diabetes requires further study.

KW - Cohort Studies

KW - Diabetes Mellitus, Type 2

KW - Ethnicity

KW - Humans

KW - Phosphates

KW - Vascular Calcification/complications

U2 - 10.1186/s12933-022-01499-4

DO - 10.1186/s12933-022-01499-4

M3 - Article

C2 - 35477475

VL - 21

JO - Cardiovascular Diabetology

JF - Cardiovascular Diabetology

SN - 1475-2840

IS - 1

M1 - 61

ER -

Plasma phosphate and all-cause mortality in individuals with and without type 2 diabetes: the Dutch population-based lifelines cohort study

Abstract

Keywords

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