4. The QUIZ
Which of the following is not associated with
higher mortality in CKD:
a. Low serum Phosphorus
b. Low PTH
c. Low Vitamin D
d. Low FGF23
e. Low Magnesium
11. CASE 1
• 74 year old with CKD 4, also suffers from Crohn’s Disease with frequent diarrhea
• Severe weakness, tremor and depressive mood
• eGFR = 20 ml/min
• sCa: 2.1mmol/, sPi: 2.5 mmol/l, ALP: 600iU/L, PTH: 335pg/ml
HOW WOULD YOU MANAGE?
12. CASE 1
• 74 year old with CKD 4, also suffers from Crohn’s Disease with frequent diarrhea
• Severe weakness, tremor and depressive mood
• eGFR = 20 ml/min
• sCa: 1.9 mmol/, sPi: 2.5 mmol/l, ALP: 600iU/L, PTH: 335pg/ml
• TTT: Alfacalcidol: 250ng/qd, Calcium Carbonate supplementation:1g/qid
13. CASE 1
• 74 year old with CKD 4, also suffers from Crohn’s Disease with frequent diarrhea
• Severe weakness, tremor and depressive mood
• eGFR = 20 ml/min
• 3 months later:
• sCa: 1.9 mmol/, sPi: 1.8 mmol/l, ALP: 600iU/L, PTH: 335pg/ml
WHAT WOULD YOU DO NEXT?
16. CASE 1
• 74 year old with CKD 4, also suffers from Crohn’s Disease with frequent diarrhea
• Severe weakness, tremor and depressive mood
• eGFR = 20 ml/min
• 3 months later:
• sCa: 1.9 mmol/, sPi: 1.8 mmol/l, ALP: 600iU/L, PTH: 335pg/ml,
• Vitamin D: 67ng/ml (NR >30ng/ml)
WHAT WOULD YOU DO NEXT?
28. CASE 2
• 54 year old woman with CKD 3b
• eGFR = 38 ml/min
• sCa: 2.1mmol/, sPi: 1.8 mmol/l, Mg:1.5mmol/l, ALP: 600iU/L, PTH: 335pg/ml
• In spite of treatment with alfacalcidol: 1ug/day and CaCO3: 1g/qid (between meals)
WHAT WOULD YOU DO NEXT?
29. CASE 2
• 54 year old woman with CKD 3b
• eGFR = 38 ml/min
• sCa: 2.1mmol/, sPi: 1.8 mmol/l, Mg: 1.5mmol/l, ALP: 600iU/L, PTH: 335pg/ml,
25Vit D: 15ng/ml
• In spite of treatment with alfacalcidol: 1ug/day and CaCo3: 1g/qid (between meals)
WHAT WOULD YOU DO NEXT?
30. CASE 2
How would you Manage?
• Vitamin 25D supplementation
• 1-25D Supplementation
• Increase calcium Supplementation
• PTH (Terapatide) injections
31. CASE 2
How would you Manage?
• Vitamin 25D supplementation:
• Loading: 20,000iU/week x12 w = ~ 300,000iU
• 800iU/day maintenance
• 1-25D Supplementation
• Increase calcium Supplementation
• PTH (Teriparatide) injections
40. CASE 3
• 72 year old female with IgA nephropathy
• Started haemodialysis in 2010. Good access dialyses 4x week
• On alfacalcidol 0.5ug od, calcium acetate, amlodipine, lisinopril, EPO
• Between 2010 and 2012 gradual rise in PTH to >600 pg/ml
• LFTs normal but alkaline phosphatase persistently elevated
• Vitamin D level >50ng/ml
• Calcium 2.48 mmol/l (normal range 2.2-2.6mmol/l). Phosphorus 1.7 mmol/l (0.8 to
1.5 mmol/l)
What would you do?
43. CASE 3
• 72 year old female with IgA nephropathy
• Started haemodialysis in 2010. Good access dialyses 4x week
• On alfacalcidol 2ug iv x3 /week
• Between 2012 and 2014 gradual rise in PTH to >1000 pg/ml
• LFTs normal but alkaline phosphatase persistently elevated
• Vitamin D level >50ng/ml
• Calcium 2.68 mmol/l (normal range 2.2-2.6mmol/l). Phosphorus 2.1 mmol/l (0.8 to
1.5 mmol/l)
What would you do next?
44. How would you Manage SHPT?
• Increase alfacalcidol dose
• Switch alfacalcidol to paracalcitol
• Add cinacalcet to alfacalcidol
• Parathyroidectomy
• Do nothing – leave alone
45. How would you Manage SHPT?
• Increase alfacalcidol dose
• Switch alfacalcidol to paracalcitol
• Add cinacalcet to alfacalcidol
• Parathyroidectomy
• Do nothing – leave alone
47. EVOLVE Study – Cinacalcet in chronic haemodialysis patients
EVOLVE INVESTIGATORS NEJM.2012.367;2482-97
•3883 patients on HD
•Placebo or Cinacalcet
•Death +CV events
No benefit in cinacalcet on death
Higher risk of GI side effects but lower risk parathyroid surgery
Difficult study – high crossover and drop out
48. Calcimimetics – overview of effects
No effect on mortality
Less Parathyroid surgery
More hypocalcaemia
More Nausea
49. EVOLVE Study – Cinacalcet impact on fractures
EVOLVE INVESTIGATORS NEJM.2012.367;2482-97
•3883 patients on HD
•Placebo or Cinacalcet
•Death +CV events
•No impact on fracture
52. How would you manage?
• Increase alfacalcidol dose
• Switch alfacalcidol to paracalcitol
• Add cinacalcet to alfacalcidol
• Parathyroidectomy
• Do nothing – leave alone
57. How would you Manage VLPL?
• Stop calcium Supplementation
• Stop Vitamin D supplementation
• Reduce Dialysate calcium Supplementation
• None of the Above
• All of the above
58. How would you Manage VLPL?
• Stop calcium Supplementation
• Stop Vitamin D supplementation
• Reduce Dialysate calcium Supplementation
• None of the Above
• All of the above
59. CKD-MBD: General management tips
• Adynamic Bone Disease with low PTH:
• stop calcium binders and vitamin D supplements.
• High turnover Bone Disease (with PTH >9 times normal):
• ensure native vitamin D levels normal. Control phosphate. Increase
calcitriol/alfacalcidol as much as calcium/phosphate allow.
• High turnover Bone Disease (with PTH >9 times normal) with hypercalcaemia:
low calcium dialysate, non-calcium binders, switch to cinacalcet, consider
parathyroidectomy
• Always ensure magnesium levels and vitamin D3 levels maintained
60. What KDIGO says about PTH in dialysis
• In patients with CKD5D we suggest maintaining iPTH levels between 2 –9 times
upper limit of normal(2C).
• In patients with CKD5D and elevated or rising iPTH, we suggest calcitriol, vitamin
D analogues, calcimimetics or a combination to lower PTH (2B).
• In patients with hypercalcaemia recommend stopping or reducing calcitriol or
vitamin D sterols (1B).
• In patients with hyperphosphataemia, recommend stopping or reducing calcitriol or
vitamin D sterols (2D).
63. FGF23 and CKD
lotho levelsof CKD patients have been
ein thevery early stagesof CKD and to
KD progresses [36]. In a rodent CKD
vels in plasma, urine, and kidney were
se in parallel [36], but the relationship
elsin CKD patientsremainsto bedeter-
ore, almost all modelsof CKD, includ-
avebeen createdbyrenal tissueablation,
tis, nephrotoxin, diabetic nephropathy,
e kidney damage, are characterized by
wnregulation of Klotho mRNA and pro-
ey and by low plasma or urine-soluble
]. Plasma soluble Klotho levels are also
early stagesof CKD [58].Pavik et al.[63]
dingthatsolubleKlothoand1,25(OH)2D
nd FGF23 levels increase in the early
nd that PTH levelsincreasein themore
Akimoto et al. [64] haverecently shown
Klotho levels of CKD patients, rather
Klotholevels,arelinked totheir number
phrons.Sakan et al.[65] recentlyreport-
renal α-Klotho levelsweresignificantly
um FGF23 levels were significantly ele-
d intermediate CKD, serum P levelsre-
he normal range. Despite falling renal
heincreasein FGF23 enhanced urinary
d serum 1,25(OH)2D levelsin early and
D, though not in advanced CKD. In ad-
ubleKlotho levelsfell significantly over
overlapping distinct mechanisms of initiation and pro-
gression [68, 69].Vascular calcification isadynamicpro-
Fig. 5. Timeprofileof changesinplasmaFGF23,Klotho,activevi-
taminD,andphosphatelevelsasCKDprogresses. Thedecreasein
Klothoproteininthebloodisanearlyevent inCKDandisprogres-
sivelyreducedalongwiththedeclineof renal function.LowKlotho
partiallyinducesFGF23resistance,causinganinitial compensatory
increasein blood FGF23tomaintain Phomeostasis. Theincrease
inFGF23decreasesactivevitaminDlevelsandisfollowedbyeleva-
tion of PTH. Hyperphosphatemia is relatively late event in ad-
vancedCKD[reprintedwithpermissionfrom 60].
Colorversionavailableonline
65. FGF23 and CKD
havebeen found to predict mortality not only among di-
alysispatientsbut amongpredialysisCKD patientsaswell
[22].
tial to facilitate thebinding of FG
The potential role of soluble Klo
in vivo remainsunknown at this
Fig. 2. Plasma FGF23 levels in thefour CKD stage groups. Boxes
represent the interquartile range with the upper and lower edges
representing the75th and 25th percentiles, respectively. Thereisa
statistically significant linear increase in plasma FGF23 levels
acrossthefour CKD groupsdivided by eGFR[reprinted with per-
mission from 21].
Fig. 3. Klotho family showing theth
themammalian genome. Homologo
mainsareconserved. Solubleformso
byalternativesplicingof itstranscrip
of thetransmembraneformbyβ-secr
Colorversionavailableonline
66. FGF23 and CKD Mortality
Figure 2. FGF23 is an independent risk factor for mortality in CKD stages 2–4
The cumulative incidence of death of CKD stage 2–4 patients increases significantly with
ascending quartiles of baseline FGF23 levels in unadjusted analyses (plot) and after full
multivariable adjustment (hazard ratios and 95% confidence intervals in the inset). 86
Wolf Page 20
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Wolf, 2012
72. Kalwansky S et al. Osteoporosis Int (2003) 14: 570–576
Significant co-prevalence of osteoporosis and CKD in the
elderly
Increasing osteoporosis with declining kidney function
Age eGFR<35mls/min
20-29 0%
30-39 0%
40-49 0%
50-59 0%
60-69 7.3%
70-79 21.3%
80+ 53.9%
73. Healthcare database 679114 adults, Ontario, Canada
Naylor Kl et al. Kidney International (2014) 86, 810–818
Fractures are more common in CKD
74. RANK-RANKL-OPG regulate Osteoclastic activity
Lewiecki, E. M. (2011) Nat. Rev. Rheumatol.
Maturation of preosteoclasts dependent on RANKL and OPG activity
76. How would you manage osteoporosis and low impact fractures in a
Patient CKD3
• Bisphosphosphonates
• Denosumab
• Bone biopsy
• Do nothing as risk of adynamic bone disease with anti-osteoporosis
medication
77. The problem with bisphosphonates in CKD
• Clearance by kidney
• 50% of dose deposits in skeleton and may be there for 10 years!
• Exacerbate adynamic bone disease (may require bone biopsy)
• Atypical fractures
• FSGS
78. How would you manage osteoporosis and low impact fractures in a
Patient with CKD4-5
• Bisphosphosphonates
• Denosumab
• Bone biopsy
• Do nothing as risk of adynamic bone disease with anti-osteoporosis
medication
80. Fractures – its not just about bone
Bone Strength
Falls
Postural hypotension,
autonomic
dysfunction, drugs
FRACTURES
Soft Tissue
padding
Fraility
Lifestyle
Nutrition
Exercise