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CLINICAL STUDY
Fluvastatin in the Treatment of Dyslipidemia Associated with Chronic KidneyFailure and Renal Transplantation
Alberto Corsini, Ph.D.Department of Pharmacological Sciences, University of Milan, Milan, Italy
Hallvard Holdaas, M.D.National Hospital, Oslo, Norway
Premature atherosclerotic coronary heart disease driven by
multiple risk factors is a major cause of morbidity and mortality
among the 6 million patients in the United States with chronic
renal failure. Consensus is that kidney failure and renal
transplantation patients should be treated aggressively for
dyslipidemia. Major medical literature databases were searched
for published information about fluvastatin, a HMG-CoA
reductase inhibitor, used in patients with impaired renal
function. This article characterizes the dyslipidemia observed
in these clinical settings and reviews the clinical experience with
fluvastatin.
Keywords atherosclerotic coronary heart disease, chronic
renal failure, renal transplantation, dyslipidemia,
fluvastatin
INTRODUCTION
Chronic kidney failure ranging from mild renal
insufficiency to end-stage disease is a common condition
that may affect as many as 6 million individuals in the
United States.[1] Premature atherosclerotic coronary heart
disease driven by multiple risk factors is a major cause of
morbidity and mortality among such patients. Data also
indicate that cardiovascular complications contribute to a
significant proportion of adverse outcomes in many of the
approximately 14,000 patients per year receiving kidney
transplants in the United States. Cardiovascular events
were responsible for 35% to 45% of deaths among renal
transplant recipients dying with a functioning graft.[2 – 4]
In both settings, atherogenic lipid abnormalities contrib-
ute to the accelerated atherosclerotic process and,
consequently, to the high prevalence of cardiovascular
disease observed in uremic patients and those who have
undergone renal transplantation.
Given the strong evidence of risk reduction and the
benefits of lipid-lowering treatment in the general
population, the emerging consensus is that kidney failure
and renal transplantation patients should be treated
aggressively for dyslipidemia.[5,6] This article character-
izes the dyslipidemia observed in these clinical settings
and reviews the clinical experience with fluvastatin, a
HMG-CoA reductase inhibitor, that may be particularly
suitable for use in kidney failure and renal transplanta-
tion patients.
LIPID DISORDERS IN KIDNEY FAILURE ANDRENAL TRANSPLANT PATIENTS
Dyslipidemia in Kidney Failure Patients
Abnormal lipid profiles vary according to the stage of
renal disease. During the asymptomatic stages of renal
insufficiency, dyslipidemia develops and becomes more
pronounced as renal failure advances. In patients with less
advanced renal insufficiency, the alteration is character-
ized more by its abnormal apolipoproteins rather than its
lipid profile.[7,8] With the progression of renal failure, the
prominent features of uremic dyslipidemia include an
increase in serum triglyceride (TG) levels (reflecting
increased production from free fatty acids and decreased
clearance of very low density lipoprotein [VLDL]
and intermediate-density lipoprotein [IDL]) and low
Address correspondence to Professor Alberto Corsini, Ph.D.,
Department of Pharmacological Sciences, University of Milan, Via
Balzretti 9, Milan 20133, Italy; E-mail: [email protected]
259
Renal Failure, 27:259–273, 2005
Copyright D 2005 Taylor & Francis Inc.
ISSN: 0886-022X print / 1525-6049 online
DOI: 10.1081/JDI-200056623
Order reprints of this article at www.copyright.rightslink.com
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high-density lipoprotein cholesterol (HDL-C). Low-den-
sity lipoprotein cholesterol (LDL-C) often is normal, but
the cholesterol may originate from the atherogenic small
and dense LDL subclass (sdLDL). The apolipoprotein B
(apoB100, the primary protein component of LDL, may
undergo enzymatic modifications contributing to im-
paired LDL receptor-mediated clearance from plasma
and to prolong its residence time in the circulation.[9] The
qualitative characteristics of renal dyslipoproteinemia are
not modified substantially by dialysis treatment.
The pathophysiologic links between the renal insuffi-
ciency and the abnormalities of lipoprotein transport are
still poorly defined, and the clinical significance of renal
dyslipidemia has not yet been clearly established. Never-
theless, it is believed that renal dyslipoproteinemia may
contribute to the development of atherosclerotic vascular
disease and progression of glomerular and tubular lesions
with subsequent deterioration of renal function.[10 – 12]
Dyslipidemia in Renal Transplantation
Patients who undergo renal transplantation often have
end stage renal disease (ESRD) for years and many of
them already have lipid derangement before transplanta-
tion. After successful renal transplant, though the renal
function returns to normal, the lipid profile is reported to
remain abnormal. The prevalence of posttransplant
hyperlipidemia ranges from 16%–78% of recipients,[13]
depending on at which time point posttransplantation
serum lipid levels were obtained. Hypercholesterolemia
occurs within 6 months in most patients (82%), whereas
the peak incidence of hypertriglyceridemia is at 12
months after transplantation.[14]
Significant elevations in total cholesterol (TC) levels
are typical, with most of the increase due to elevations in
LDL-C, although significant increases in VLDL-C and
VLDL-TG are also frequently seen.[15 – 17] In addition,
elevated apo B and lipoprotein (a) plasma levels have
been reported, and LDL oxidation may increase following
transplantation.[15,17 – 24] Changes in HDL-C posttrans-
plantation are more variable, with the literature reporting
no change, decreases, or increases.[15,25,26] Changes in
lipids may be seen as early as 3 weeks after transplan-
tation, but typically are observed during the first 3 to 6
months after transplantation, with initial changes persist-
ing over time.[27]
The causes of posttransplant hyperlipidemia (PTHL)
are complex and not fully understood, however several
classes of immunosuppressants including the cortico-
steroids,[14,28 – 30] calcineurin inhibitors (cyclospor-
ine),[31 – 34] (tacrolimus),[35 – 37] and (sirolimus)[38] appear
to play a role. Current data suggest that the discrepancies
in the relative incidence and severity of PTHL are largely
accounted for by this difference in corticosteroid dose.[39]
Posttransplant hyperlipidemia may not only contrib-
ute to increased cardiovascular morbidity and mortality in
the transplant population,[40 – 42] but also may be a factor
in the development and progression of chronic vascular
rejection and chronic graft dysfunction.[43 – 45]
ROLE OF FLUVASTATIN FOR DYSLIPIDEMIAIN THE KIDNEY FAILURE ANDRENAL TRANSPLANTATION
As a drug class, the six statins available in the United
States (atorvastatin, fluvastatin, lovastatin, pravastatin,
rosuvastatin, and simvastatin) all effectively lower LDL-
C. Yet, there are differences among them with respect to
1) pharmacokinetic properties; 2) effects on the entire
lipid profile; and 3) evidence for pleiotropic effects.
Evidence from experimental and clinical outcome trials
have shown that substantial benefits are associated with
treatment with fluvastatin in patients with chronic kidney
failure and following successful renal transplantation.
Pharmacokinetic Properties
The pharmacological features of fluvastatin make it
useful in the setting of kidney failure and renal
transplantation patients (Table 1). Cytochrome P450
(CYP) 2C9, not CYP3A4, is the major hepatic enzyme
responsible for fluvastatin metabolism.[46] Fluvastatin has
no detectable active circulating metabolites. After single
or multiple doses above 20 mg, fluvastatin exhibits
saturable first-pass metabolism resulting in higher-than-
expected plasma fluvastatin concentrations. This phe-
nomenon might be due to the saturation of CYP2C9
enzymes:[46,47] an effect totally prevented by the 80 mg
fluvastatin slow-release formulation.[48] Furthermore,
fluvastatin is not a substrate of p-glycoprotein.[46] Urinary
excretion accounts for just 6% of fluvastatin clearance,
while the fecal route is responsible for 90%.[47] The
pharmacokinetics (PK) of fluvastatin were assessed in
subjects with various degrees of renal impairment
including patients on hemodialysis and nephrotic syn-
drome by Appel-Dingemanse et al.[49] Renal impairment
did not affect the PK of fluvastatin after a single oral dose.
Patients with varying degrees of renal insufficiency,
as well as recipients of kidney transplants, are at high risk
for drug–drug interactions due to their need for multiple
medications. Drug interaction may cause the levels of
concomitant drugs to increase, and, thus, increase the risk
of side effects. Variability in pharmacokinetic properties
A. Corsini and H. Holdaas260
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among the statins results in some important differences
in their drug interaction potential. Most of the clinically
important drug interactions that occur with certain of
the statins are attributed to the co-administration of
the statins that are metabolized by Cytochrome P450
(CYP)3A4 and other agents that are potent inhibitors or
substrates of this enzyme. The CYP3A4 isoenzyme is
responsible for the metabolism of atorvastatin, lovastatin,
and simvastatin.[46] Three statins demonstrate only minor
metabolism by CYP3A4: fluvastatin, pravastatin, and
rosuvastatin.[46,47,50] Of particular concern is the potential
for pharmacokinetic interactions with other lipid-lowering
agents, such as fibrates and niacin, and with immunosup-
pressive agents, such as prednisone, tacrolimus, and cyclo-
sporine, which are used posttransplant. Interestingly, the
interaction between statins and fibrates appears to in-
volve more that a single mechanism and not CYP3A4
metabolism.[50 – 54]
Drug disposition can also be altered by mechanisms
independent of CYP-induced metabolism and thereby
may influence the interaction potential of statins. P-
glycoprotein (PGP) is a transmembrane drug-efflux pump
that transports many drugs across cells including those of
the liver and intestine. As such, PGP can be a locus
contributing to drug interactions.[55,56] That is, PGP can
often be the mechanism for significant pharmacokinetic
drug interactions when two or more drugs are competing
for the PGP transport site.
Statin and Cyclosporine Interactions
The interaction of cyclosporine and certain statins via
the CYP3A4 system is a major concern. Moreover, PGP is
responsible, at least in part, for the low and variable
bioavailability of cyclosporine, and the cyclosporine-
pravastatin interaction may occur at the PGP level.[57]
Cyclosporine increases the plasma levels of atorvastatin,
cerivastatin, lovastatin, pravastatin, simvastatin, and to a
very minor extent, that of fluvastatin (Table 2). Concom-
itant therapy with these statins has been reported to
greatly increase the risk of myopathy that may eventually
progress to rhabdomyolysis, and many cases of rhabdo-
myolysis have indeed occurred in transplant patients
taking cyclosporine together with statins.[57] There have
been no reports of rhabdomyolysis when fluvastatin is
Table 1
Clinical pharmacokinetics of HMG-CoA reductase inhibitors
Parameter Atorva Fluva Fluva XL Lova Prava Rosuva Simva
Tmax (h) 2–3 0.5–1 4 2–4 0.9–1.6 3 1.3–2.4
Cmax (ng/mL) 27–66 448 55 10–20 45–55 37 10–34
T1/2 (h) 15–30 0.5–2.3 4.7* 2.9 1.3–2.8 20.8 2–3
Bioavailability (%) 12 19–29 6 5 18 20 5
Protein binding (%) 80–90 >99 >99 >95 43–55 88 94–98
Metabolism CYP3A4 CYP2C9 CYP2C9 CYP3A4 Sulfation CYP2C9, 2C19 (minor) CYP3A4
Metabolites Active Inactive Inactive Active Inactive Active (minor) Active
P-glycoprotein substrate Yes No No Yes Yes No Yes
Urinary excretion (%) 2 6 6 10 20 10 13
Fecal excretion (%) 70 90 90 83 71 90 58
Atorva=atorvastatin; Fluva=fluvastatin; Lova=lovastatin; Prava=pravastatin; Rosuva=rosuvastatin; Simva=simvastatin. Based
in a 40-mg dose, with the exception of fluvastatin XL (80 mg).*Apparent half life.
Adapted from data in Refs. [47,50].
Table 2Effect of co-administered cyclosporine on
pharmacokinetic parameters of statins
AUC* Cmax*
Cerivastatin "�3.7 "�4.8
Fluvastatin "�1.9 "�1.3
Lovastatin "�20 —
Pravastatin "�5–23 "�8
Simvastatin "�3–8 —
Atorvastatin "�6 "�6
Rosuvastatin "�11 "�7
AUC, area under the plasma concentration-time curve; Cmax,
maximum plasma concentration.*Values shown are the changes relative to the statin alone.
Analytical procedures have been utilized for all statins with the
exception of atorvastatin where a bioassay (inhibition of HMG-
CoA reductase activity) has been employed.
Adapted from A. Corsini. Cardiovascular Drugs and Ther-
apy. 2003; Vol. 17, 257–277.
261Fluvastatin, Dyslipidemia, and Nephrotic Patients
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co-administered with cyclosporine. The reduced potential
for pharmacokinetic interaction between fluvastatin and
cyclosporine theoretically is due its predominant metab-
olism by CYP2C9, rather than CYP3A4, and its not being
a substrate for PGP. Recently, it has been reported that
cyclosporine also increased the plasma levels of rosuvas-
tatin (up to 11-fold, probably due to an interaction
between cyclosporine and rosuvastatin at the liver organic
anion transporting polypeptide (OATP-C).[58,59]
Thus, for fluvastatin, the likelihood for serious
metabolic drug interactions is expected to be minimal.[46]
Co-administration of fluvastatin with other lipid-lowering
agents has been shown to be without relevant drug inter-
actions.[60 – 62] In terms of its suitability for use in patients
with end-stage renal disease on maintenance hemodialy-
sis, plasma fluvastatin concentrations are not influenced
by the dialysis membrane, and it does not accumulate in
hemodialysis patients with hyperlipidemia.[63]
Effects on Lipid Profile
Considering that the lipid abnormalities associated
with accelerated atherosclerosis vary with the stage of
renal disease, it is desirable for a lipid lowering agent to
favorably affect abnormal apolipoproteins as well as
lipid levels. In one randomized, placebo-controlled trial
in the elderly (mean age, 75.5 years), fluvastatin XL
produced a mean LDL-C reduction of 31% after 6
months treatment.[64] Median decreases in triglycerides
levels, in another pooled analysis of 1674 patients with
primary hypercholesterolemia,[65] were 19%; and HDL-
C levels were increased by 8.7% overall. Favorable
changes in and apolipoprotein A-I and apolipoprotein B
levels also occurred.
The hypolipidemic potential of fluvastatin may be
greater than that expected from its effects on LDL-C and
TG alone. For example, fluvastatin 80 mg XL, once daily,
decreased total cholesterol and total LDL-C, but in
patients with atherogenic dLDL, absolute changes of
dLDL were most pronounced, emphasizing the value of
fluvastatin treatment in type 2 diabetes and other disease
conditions (including posttransplant dyslipidemia)[66]
characterized by these lipoprotein phenotypes.[67]
Pleiotropic Effects
Statins may have nonlipid-related (pleiotropic) prop-
erties that exert direct beneficial effects on the arterial
wall, interfering with the formation and progression of
atherosclerotic lesions. Evidence indicates that statins can
be differentiated in terms of their pleiotropic proper-
ties.[68 – 70] Preclinical studies of fluvastatin demonstrated
significantly altered leucocyte-endothelial cell adhesion
responses to platelet-activating factor and leukotriene
B4;[71] increased apoptosis in cardiac myocytes;[72]
reduced interleukin-6 levels;[73] inhibited proliferation of
vascular smooth muscle cells;[74] increased tissue plas-
minogen activator secretion;[75] reduced macrophage
accumulation in carotid lesions;[76] and direct antioxidant
effects on LDL-C.[77] Collectively, these actions suggest
that fluvastatin has the ability to decrease the thrombo-
genicity and instability of atheromatous plaques.[78,79]
CLINICAL EXPERIENCEWITH FLUVASTATIN
Kidney Failure/Maintenance Hemodialysis
The impact of atherosclerotic cardiovascular disease
in patients with renal insufficiency is well-documented;[6]
and there is a growing body of evidence documenting the
goals, efficacy, and safety of dyslipidemia treatment
among chronic renal insufficiency and dialysis patients. A
retrospective investigation of 3716 patients with ESRD
showed that statin use was independently associated with
a 36% reduction in the risk of cardiovascular mortality,[80]
and results of a post hoc subgroup analysis from the
recent CARE study showed pravastatin treatment reduced
the risk of major coronary events in patients with mild
chronic renal insufficiency.[81] Similar results have been
obtained with simvastatin in the Heart Protection Study
(HPS) trial.[82] With regard to fluvastatin, three stud-
ies[83 – 85] investigated the efficacy and safety of fluvas-
tatin in patients with various stages of chronic kidney
disease (CKD) and one small study[63] examined the ef-
fect of fluvastatin in hyperlipidemic hemodialysis
patients. Over the course of these studies, 90 patients
were treated with fluvastatin for durations ranging from
8 to 52 weeks (Table 3).
Each study reported significant reductions in TC,
LDL-C, and TG compared to baseline values, with two of
the studies[83,84] also demonstrating significant reductions
in these parameters compared to placebo. Total choles-
terol levels dropped 15% to 32% following fluvastatin
treatment, a trend mirrored by 21% to 31% reductions in
LDL-C and 7% to 19% reductions in TG. In one study
that compared the effects of fluvastatin in patients with or
without chronic kidney disease, the degree of renal
function (creatinine clearance levels 30 to 60 mL/min or
60 to 90 mL/min) did not appear to affect the lipid-
lowering effects of fluvastatin,[83] suggesting that patients
with any degree of renal impairment may benefit from
fluvastatin treatment. Another study noted significant
A. Corsini and H. Holdaas262
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Ta
ble
3E
ffec
tso
ffl
uv
asta
tin
inp
atie
nts
wit
him
pai
red
ren
alfu
nct
ion
Ref
eren
ce
Nu
mb
er
of
pat
ien
ts
rece
ivin
g
flu
vas
tati
n
Un
der
lyin
gre
nal
dis
ord
erE
ntr
ycr
iter
ia
Du
rati
on
of
acti
ve
trea
tmen
t
(wee
ks)
Do
sag
e
(mg
/day
)
Eff
ects
on
lip
ids
(co
mp
ared
wit
hb
asel
ine)
Saf
ety
fin
din
gs
TC
LD
L-C
HD
L-C
TG
[83
]3
2D
ysl
ipid
emic
,w
ith
or
wit
ho
ut
CK
D
TC
>2
39
mg
/dL
HD
L-C
<3
5m
g/d
L
12
40
�1
5%
a,b
�2
1%
a,b
N/R
�7
%a,b
No
adv
erse
effe
cts
no
ted
,
incl
ud
ing
ren
alo
r
hep
atic
par
amet
ers
[85
]9
Nep
hro
tic
syn
dro
me
Hy
po
lip
op
rote
inem
ia
(mea
nv
alu
es:
TC
=3
58
mg
/d
LL
DL
–C
=2
36
mg
/dL
)
52
40
�3
1%
b�
28
%b
+7
%�
19
%b
No
adv
erse
effe
cts
no
ted
;ri
sein
seru
mcr
eati
nin
e
attr
ibu
ted
to
un
der
lyin
gd
isea
se
[84
]4
4S
tag
e3
to5
CK
DL
DL
-C�
16
0m
g/d
L8
40
�2
0%
a,b
�2
6%
a,b
0%
�1
6%
a,b
No
seri
ou
sad
ver
se
even
tso
ccu
rred
du
rin
gth
est
ud
y;
mo
stco
mm
on
no
nse
rio
us
adv
erse
even
tsw
ere
gas
tro
inte
stin
al
com
pla
ints
[63
]5
ES
RD
on
mai
nte
nan
ce
hem
od
ialy
sis
TC
>2
20
mg
/dL
26
30
��
30
%b
��
46
%b
��
13
%��
7%
No
adv
erse
effe
cts
no
ted
,
incl
ud
ing
ren
alo
r
hep
atic
par
amet
ers
TC
=to
tal
cho
lest
ero
l;L
DL
-C=
low
den
sity
lip
op
rote
inch
ole
ster
ol;
HD
L-C
=h
igh
den
sity
lip
op
rote
inch
ole
ster
ol;
TG
=tr
igly
ceri
des
.aS
ign
ific
antl
ylo
wer
val
ues
than
tho
seac
hie
ved
wit
hp
lace
bo
trea
tmen
t(P
<0
.05
).bS
ign
ific
antl
ylo
wer
than
bas
elin
ev
alu
es(p
<0
.05
).
263
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Ta
ble
4E
ffec
tso
ffl
uv
asta
tin
inre
nal
tran
spla
nt
pat
ien
ts
Ref
eren
ce
Num
ber
of
pat
ients
rece
ivin
g
fluvas
tati
n
Entr
ycr
iter
ia
(lip
idpar
amet
ers)
Dura
tion
of
acti
ve
trea
tmen
tD
osa
ge
Eff
ects
on
lipid
s(c
om
par
edw
ith
bas
elin
e)
Saf
ety
findin
gs
TC
LD
L-C
HD
L-C
TG
Ran
dom
ized
,P
lace
bo-C
ontr
oll
edT
rial
s
[88]
1050
TC
154
–348
mg/d
L5
–6
yea
rs40
–80
mg/d
ay�
9%
�16%
a
(ver
sus
pla
cebo)
�32
a,b
N/R
z�
14%
(ver
sus
pla
cebo)
Sim
ilar
num
ber
sof
trea
tmen
t
dis
conti
nuat
ions
infl
uvas
tati
n
and
pla
cebo
gro
ups;
no
chan
ges
inth
eobse
rved
rate
sof
mal
ignan
tdis
ease
sbet
wee
n
trea
tmen
tgro
ups
[89]
13
TC
200
–350
mg/d
L3
yea
rs40
mg/d
ay�
7%
a,b
�15%
a,b
+8%
+2%
No
dif
fere
nce
inse
rum
crea
tinin
e,
CP
K,
or
bil
irubin
note
dbet
wee
n
fluvas
tati
nan
dpla
cebo
[90]
18
TC
200
–350
mg/d
L6
month
s40
mg/d
ay�
17%
a,b
�24%
a,b
+7%
�10%
No
dif
fere
nce
inblo
od
pre
ssure
,
crea
tinin
e,C
PK
,bil
irubin
,or
glu
cose
bet
wee
nfl
uvas
tati
nan
d
pla
cebo;
1fl
uvas
tati
n-t
reat
ed
pat
ient
dev
eloped
myal
gia
.
[91]
182
No
lipid
crit
eria
12
wee
ks
40
mg/d
ay+
15%
�18%
a
(ver
sus
pla
cebo)
+2%
�41%
a
(ver
sus
pla
cebo)
+37%
+5%
(ver
sus
pla
cebo)
+21%
�25%
a
(ver
sus
pla
cebo)
No
dif
fere
nce
sin
adver
seev
ents
bet
wee
nfl
uvas
tati
nan
dpla
cebo;
no
epis
odes
of
rhab
dom
yoly
sis;
and
sim
ilar
num
ber
sof
trea
tmen
t
dis
conti
nuat
ions
bet
wee
n
fluvas
tati
nan
dpla
cebo
[92]
37
TC
154
–348
mg/d
L12
wee
ks
40
mg/d
ay+
2%
�18%
a
(ver
sus
pla
cebo)
�15%
�34%
a
(ver
sus
pla
cebo)
+59%
+11%
(ver
sus
pla
cebo)
�1%
�12%
(ver
sus
pla
cebo)
No
dif
fere
nce
inblo
od
pre
ssure
or
GF
Rbet
wee
nfl
uvas
tati
n
and
pla
cebo
264
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onal
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y.
265
Ref
eren
ce
Num
ber
of
pat
ients
rece
ivin
g
fluvas
tati
n
Entr
ycr
iter
ia
(act
ive
trea
tmen
t)
Dura
tion
of
acti
ve
trea
tmen
t
Tre
atm
ent
regim
en
Eff
ects
on
lipid
s
Saf
ety
findin
gs
TC
LD
L-C
HD
L-C
TG
Tri
als
Com
par
ing
Post
-Tre
atm
ent
Eff
ects
toB
asel
ine
Val
ues
[94]
38
TC
>250
mg/d
L
LD
L-C
>150
mg/d
2yea
rs40
–80
mg/d
ay�
18%
b�
23%
b+
2%
�21%
bM
ild
and
tran
sien
tad
ver
seef
fect
sobse
rved
,
wit
hno
signif
ican
tvar
iati
on
inhep
atic
enzy
mes
,uri
cac
idor
CP
K.
[98]
21
(dia
bet
ic)
TC
255
–380
mg/d
L
TG
115
–352
mg/d
L
1yea
r20
mg/d
ay�
17%
b�
7%
b+
36%
b�
28%
bN
oad
ver
seev
ents
or
alte
rati
ons
in
hep
atic
enzy
mes
;sl
ight
and
signif
ican
tri
sein
CP
Kth
at
rem
ained
innorm
alre
fere
nce
range
[114]
20
TC
>251
mg/d
L1
yea
r20
–40
mg/d
ay�
18%
b
to�
21%
b
�27%
bto
�29%
b�
1%
to0%
�16%
to�
41%
Flu
vas
tati
ndis
conti
nued
in1
pat
ient
due
tonau
sea
and
vom
itin
g;
no
alte
rati
ons
inhep
atic
enzy
mes
or
CP
Kobse
rved
[115]
20
TC
>243
mg/d
L1
yea
r20
–40
mg/d
ay�
20%
b�
28%
b�
1%
�27%
2pat
ients
report
ednau
sea
(1dis
conti
nued
trea
tmen
t)an
d1
pat
ient
report
ed
tran
sien
tin
som
nia
[116]
30
‘‘N
on-r
esponsi
ve
todie
t’’
hyper
lipid
emia
6m
onth
s20
–40
mg/d
ay�
27%
to
�29%
b
�31%
bN
/Rz
N/R
zN
osi
gnif
ican
tef
fect
of
fluvas
tati
non
CP
K,
and
no
adver
seev
ents
rela
ted
tom
yoto
xic
ity
[117]
16
TC
>240
mg/d
L
LD
L-C
>130
mg/d
L
6m
onth
s20
–40
mg/d
ay�
16%
a,b
�29%
a,b
+6%
�11%
No
signif
ican
tef
fect
of
fluvas
tati
n
on
renal
and
liver
funct
ion
test
s
or
CP
Kle
vel
s;no
myal
gia
report
ed.
[95]
14
TC
>240
mg/d
L
TG
<440
mg/d
L
20
wee
ks
20
–40
mg/d
ay�
27%
b�
38%
b0%
�23%
bN
oad
ver
seev
ents
or
effe
cton
CP
Kobse
rved
.
[102]
20
LD
L-C
>160
mg/d
L
TG
<400
mg/d
L
14
wee
ks
20
mg/d
ay�
16%
b�
25%
b+
7%
�9%
Adver
seev
ents
gen
eral
lym
ild
and
tran
sien
t;no
evid
ence
of
myopat
hy,
rhab
dom
yoly
sis,
or
ophth
alm
olo
gic
abnorm
alit
ies
[118]
38
TC
>251
mg/d
L12
wee
ks
20
mg/d
ay�
23%
b�
30%
bN
/Rd
N/R
dA
dver
seef
fect
s(g
astr
icco
mpla
ints
,
myal
gia
)m
ild
and
tran
sien
tan
d
did
not
requir
etr
eatm
ent
dis
conti
nuat
ion;
no
signif
ican
t
elev
atio
ns
inhep
atic
enzy
mes
or
CP
K
[119]
17
TC
>240
mg/d
L
LD
L-C
>160
mg/d
L
12
wee
ks
20
mg/d
ay�
18%
b�
25%
b�
6%
�15%
No
stat
in-r
elat
edad
ver
seef
fect
s
report
ed,
and
no
chan
ges
inli
ver
enzy
mes
or
CP
K
[96]
12
TC
>220
mg/d
L
LD
L-C
>160
mg/d
L
12
wee
ks
20
mg/d
ay�
25%
b�
31%
b+
5%
�20%
bN
oad
ver
seev
ents
or
effe
cton
CP
Kobse
rved
[97]
21
(dia
bet
ic)
TC
>255
mg/d
L
TG
<354
mg/d
L
12
wee
ks
20
mg/d
ay�
17%
b�
3%
b+
36%
c�
7%
bN
oad
ver
seef
fect
sre
port
ed.
[120]
10
No
lipid
crit
eria
12
wee
ks
20
mg/d
ay�
17%
b�
28%
b+
4%
�11%
bN
osi
gnif
ican
tch
anges
inhep
atic
enzy
mes
or
CP
Kle
vel
sobse
rved
[121]
19
TC
>240
mg/d
L
LD
L-C
>130
mg/d
L
8w
eeks
40
mg/d
ay�
15%
b�
22%
b+
7%
�9%
No
effe
cton
hem
ost
atic
par
amet
ers.
[122]
20
(12
wit
h
pre
dnis
one
and
8w
ithout)
LD
L-C
>160
mg/d
Lor
TC
/HD
L-C
rati
o>
5.0
.
�26
wee
ks
20
mg/d
ay�
12%
ban
d
�13%
�12.%
ban
d
�16.%
b
No
chan
ge
No
chan
ge
Low
dosa
ges
of
fluvas
tati
nap
pea
r
tobe
safe
incy
closp
ori
ne-
trea
ted
renal
tran
spla
nt
reci
pie
nts
TC
=to
tal
chole
ster
ol;
LD
L-C
=lo
wden
sity
lipopro
tein
chole
ster
ol;
HD
L-C
=hig
hden
sity
lipopro
tein
chole
ster
ol;
TG
=tr
igly
ceri
des
.aS
ignif
ican
tly
low
erval
ues
than
those
achie
ved
wit
hpla
cebo
trea
tmen
t(
p<
0.0
5).
bS
ignif
ican
tly
low
erth
anbas
elin
eval
ues
(p
<0.0
5).
cS
ignif
ican
tly
hig
her
than
bas
elin
eval
ues
.dN
R=
not
report
ed;
spec
ific
val
ues
for
blo
od
lipid
par
amet
ers
not
report
ed.
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reductions in serum lipids within 2 months of the onset of
treatment, with effects persisting through 1 year.[85]
The largest study was conducted in 45 patients with
moderate-to-advanced renal insufficiency (i.e., stage 3 to
stage 5 CKD). In addition to the reductions in TC, LDL-
C, and TG noted in the other studies, this study also
reported beneficial changes in apolipoproteins and
lipoprotein particle profiles.[84] Following fluvastatin
treatment, the levels of TC, LDL-C, ApoB, and Lp(b)
returned to those seen in healthy, normolipidemic people,
while levels of TG, VLDL-C, apoCIII, and apoCIII-HP
were reduced less substantially.[84] Given the association
of abnormalities in these lipoproteins with the progression
of renal insufficiency,[86] the results of this study suggest
that fluvastatin treatment has the potential to attenuate the
progression of chronic kidney disease through its lipid-
lowering effects.
No serious adverse events were attributed to
fluvastatin treatment in any of the studies, with the most
common side effects being gastrointestinal complaints,
such as nausea or vomiting. While one study noted a
significant rise in serum creatinine levels, this was
attributed to decreased glomerular filtration, a character-
istic of the study population;[85] the other studies found no
such increase.
Together, these studies provide evidence that fluvas-
tatin can induce favorable changes in blood lipid
parameters; however, further studies must be conducted
to determine whether these alterations produce beneficial
outcomes with regard to the progression of chronic kidney
disease and the development of atherosclerotic processes
in patients with impaired renal function.
Renal Transplantation
Levels of TC, LDL-C, and HDL-C rise following
transplantation; a result of immunosuppressive therapy
and altered diet.[14,42,87] A total of 20 well-documented
studies have examined the lipid effects of fluvastatin in
patients who underwent successful renal transplantation
(Table 4). During the course of these studies, more than
1500 renal transplant recipients received fluvastatin for
durations ranging from 3 months to 6 years. Five of these
studies were placebo-controlled,[88 – 92] with the other
studies comparing the effects of fluvastatin to pretreat-
ment serum lipid values in patients with at least
moderately elevated TC (>200 mg/dL) or LDL-C (>130
mg/dL). Every study reported significant reductions in
LDL-C levels following fluvastatin treatment. In 11 of the
studies, LDL-C concentrations fell to levels 3% to 38%
below baseline values. With respect to the placebo-
controlled studies, LDL-C values observed in fluvastatin-
treated patients were consistently significantly lower than
those seen with placebo treatment.
Changes from baseline in the concentrations of TC
followed a similar pattern to that of LDL-C. With two
exceptions[91,92] the studies demonstrated declines in
serum levels of TC that ranged from 7% to 29% lower
than baseline values. With respect to these two studies, the
comparisons with placebo, however, did show significant
differences favoring fluvastatin (�10% and�18%, re-
spectively). Indeed, relative to placebo controls, the
fluvastatin-mediated changes in TC concentrations were
uniformly significant. Specifically, placebo-treated
patients completed the studies with TC values that were
more than 10% higher than were their fluvastatin-treated
counterparts. The reductions in TC and LDL-C occurred
within 1 month of initiating fluvastatin therapy[93,94] and
persisted for the duration of the treatment period, even in
those studies that exceeded 6 months[89,94] and persisted
for over 5 years in one study.[88] Most of the studies
reported numerical reductions in TG levels and increases
in HDL-C levels; however, these changes were found to
be statistically significant when compared to pretreatment
values only in certain studies.[94 – 98] Collectively these
studies demonstrate that fluvastatin exerts the same types
of lipid-lowering effects in renal transplant patients as it
produces in other study populations.[99,100]
Alert Trial
Whether the beneficial lipid effects described above
confer better outcomes for renal transplant patients has
been addressed in the ALERT (Assessment of Lescol1 in
Renal Transplantation) trial.[88] This multicenter trial
enrolled 2102 patients with functioning renal transplants
and mild-to-moderate elevations in serum cholesterol. All
patients received concomitant cyclosporine A and 81%
received steroid therapy. Nearly all patients also received
cardioprotective medications, including beta-blockers,
calcium channel antagonists, and aspirin.[88] Patients
were randomly assigned to receive fluvastatin at an initial
dose of 40 mg/day or placebo for a period of 5 to 6 years.
Two years into the study, the dosage of fluvastatin was
increased to 80 mg/day based on the more robust blood
lipid reductions noted at higher doses in other studies.[99]
The primary endpoint of the study was the first
occurrence of a major adverse cardiac event (MACE),
defined as cardiac death, nonfatal myocardial infarction
(MI), or coronary revascularization. In addition, the
ALERT trial investigated other combined and individual
cardiac and noncardiac endpoints as well as assessing
treatment effects on lipid concentrations and safety of the
study medication.
A. Corsini and H. Holdaas266
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After 6 weeks of treatment, fluvastatin therapy had
significantly lowered LDL-C concentrations by a mean of
25% compared with placebo, with these effects persisting
throughout the study. After a mean follow-up period of
5.1 years, fluvastatin had significantly lowered mean
LDL-C by 32% compared with placebo. Furthermore,
mean TC and mean TG levels decreased significantly in
the fluvastatin group compared with placebo.
Despite a 17% reduction in the incidence of MACE
in fluvastatin-treated patients, the decrease was not
significantly different than was that observed for placebo
( p=0.139). Treatment with fluvastatin reduced the risk
coronary heart disease, defined as cardiac death or
nonfatal MI by 35%, consistent with the beneficial effects
of statins in other populations. When these events were
assessed individually, fluvastatin treatment reduced the
risk of cardiac death and nonfatal MI by 38% and 32%,
respectively. These reductions were statistically signifi-
cant, and support the beneficial effects of fluvastatin in
this patient population.[88,101]
Safety of Fluvastatin in the Studies Overall
In all of the studies, among fluvastatin-treated pa-
tients compared with baseline or to placebo, no clinically
important alterations in laboratory tests of renal or hepatic
function were observed; likewise, in the placebo-con-
trolled studies, no differences in the frequency or severity
of adverse events were noted between those receiving
fluvastatin and those randomized to placebo. No cases of
fluvastatin-induced rhabdomyolysis were reported. Two
patients experienced myalgia but did not demonstrate
elevated levels of creatine kinase.[90,102] There was a
single patient with an isolated elevation in creatine kinase,
resolving even with continuing fluvastatin treatment.[102]
IMPACT OF FLUVASTATIN ONRENAL FUNCTION
Lipid abnormalities in renal disease are also associ-
ated with a progressive decline in renal function.
Experimental studies demonstrated that potentially ath-
erogenic lipoproteins, such LDL, are associated with renal
pathophysiological changes that result in progressive
glomerular and interstitial damage and an ultimate
reduction in renal function. Furthermore, clinical studies
show that renal function declines more rapidly among
patients with primary renal disease or diabetic nephrop-
athy who have hyperlipidemia.[103] The underlying
pathophysiological mechanisms of the relationship be-
tween dyslipidemia and progression of renal insufficiency
are not fully understood. However, fluvastatin and other
lipid-lowering agents can reduce renal lesions and
preserve renal function by virtue of their effect on lipid
abnormalities and also by influencing important intracel-
lular pathways that are involved in the inflammatory and
fibrogenic responses, which are common components of
many forms of progressive renal injury.[104] The later
effects are independent of plasma cholesterol lowering.
There is evidence that fluvastatin’s beneficial effects
on renal function, beyond reducing hyperlipidemia in
patients with kidney disease, involve a complex action on
several intracellular pathways mediating nitric oxide
formation,[105] inflammation[106] and oxidative process-
es,[107] mesangial cell proliferation,[108] macrophage
adhesion,[109] and fibrogensis.[110] Therefore, fluvastatin
appears to exhibit an antiproteinuric effect and preserve
creatinine clearance[111,112] due to both its lipid-lowering
activities and its direct pleiotropic actions on a number of
biologically important processes.
CONCLUSIONS
Although the National Cholesterol Education Pro-
gram Adult Treatment Panel III recommendations that
patients achieve a LDL-C less than 100 mg/dL, the
optimal extent of LDL-C lowering is even greater, based
on a recent statement.[113] Aggressive treatment that
lowers LDL-C below the currently recommended goal
may further reduce patients’ risk of cardiac death.
Recently reported trials in patients with proven coronary
heart disease suggest that intensive lipid-lowering treat-
ment was beneficial. (Cannon, 2003 #142; Nissen, 2004
#143; de Lemos, 2004 #457.) The rationale for such
treatment appears biologically and clinically plausible and
may be a relevant approach to the accelerated atheroscle-
rosis seen in renal insufficiency and kidney transplant
patients. Chronic kidney failure and renal transplantation
are characterized by abnormalities in lipoprotein metab-
olism, markedly increasing the risk of cardiovascular
disease and contributing to the progression of renal
disease. Therefore, preventive treatment is necessary in
these types of patients. There are no definitive guidelines
as to the best statin to use when renal function is impaired.
In this context, based on its pharmacokinetic properties
and its pleiotropic effects, fluvastatin is a good alternative
among the currently available statins for treatment of the
dyslipidemia in these high-risk populations. Fluvastatin’s
safely and effectively lowers cholesterol levels in patients
with renal disease, and management of dyslipidemia is
associated with beneficial effects on proteinuria and
creatinine clearance.
267Fluvastatin, Dyslipidemia, and Nephrotic Patients
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