ACUTE ON CHRONIC LIVER FAILURE : FROM A TO...
Transcript of ACUTE ON CHRONIC LIVER FAILURE : FROM A TO...
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Wim Laleman, MD, PhD
Department of Liver and Biliopancreatic disorders
University Hospitals Gasthuisberg, Leuven, BELGIUM
ACUTE ON CHRONIC LIVER FAILURE :
FROM A TO CLF
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EVOLVING CIRRHOSISsetting the stage to ACLF
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Chronic liver disease
Compensated cirrhosis
Decompensated cirrhosis
Death
Ascites Variceal
bleeding
Encephalopathy
Jaundice
Development of complications
DECOMPENSATION OF CIRRHOSISa decisive time point both in terms of medical management and prognosis
Bacterial infections
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Pro
bab
ility
of
surv
ival
Pro
bab
ility
of
dev
elo
pin
g co
mp
licat
ion
s
Time (months) Time (months)
Gines et al. Hepatology 1987; 7:122
0
10
20
30
40
50
60
70
0 20 40 60 80 100 120 140 160
ascites encephalopathy variceal hemorrhage
0
10
20
30
40
50
60
70
80
90
100
0 20 40 60 80 100 120 140 160 180
Median survival ~10 years
Median survival ~1,6 years
IMPACT OF DECOMPENSATION ON PROGNOSIS
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Liver transplantation
or death
Time in years
Liv
er
fibro
sis
, p
ort
al p
ressu
re a
nd
fa
iure
Pre-cirrhotic
(10 - 35 years)
Compensated
cirrhosis
(10 - 15 years)
Decompensated
cirrhosis
(1.5 years)
Organ/system dysfunction
• Liver
• Kidney
• Brain
• Coagulation
• Circulation
• Heart
• Intestine
• Immune
• Adrenal gland
• Muscle
ACLF : A SEPARATE ENTITY… which does not equal end-stage liver disease !!!
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Acute-on-chronic Liver
Failure• High mortality (1 month)
• Multiple organ or systems
failure
• Immune dysfunction
Liver transplantation
or death
Time in years
Liv
er
fibro
sis
, p
ort
al p
ressu
re a
nd
fa
iure
Pre-cirrhotic
(10 - 35 years)
Compensated
cirrhosis
(10 - 15 years)
Decompensated
cirrhosis
(1.5 years)
Precipitating event
(e.g. bacterial infection)
Organ/system FAILURE
• Liver
• Coagulation
• Kidney
• Brain
• Circulation
• Lung
ACLF : A SEPARATE ENTITY… and which not equals end-stage liver disease !!!
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Definition, Diagnosis and Grading
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ACLF : The EASL-CLIF Consortium definition
Moreau R et al Gastroenterology 2013
acute decompensation of cirrhosis (defined by the development of ascites,HE, GI bleeding and/or bacterial infections)
single organ failure • single renal failure or • other single non-renal organ failure if associated
with renal and/or brain dysfunction
multiple organ failures.
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CANONIC study
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DIAGNOSIS & GRADING OF ACLF
The diagnosis and the grading of ACLF is based
on the SOFA score.
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DIAGNOSIS & GRADING OF ACLF
…but slightly adapted to the liver setting !
Moreau R et al CANONIC Gastroenterology 2013
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DIAGNOSIS & GRADING OF ACLF
and finally simplified to the CLIF-C SOFA score
which defines (> 7 – max 18) and grades ACLF
Jalan et al. J Hepatol 2014 and 2015
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Arroyo, Jalan. Semin Liver Dis 2016;36:109–116
GRADES OF ACLF
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Decompensation of chronic liver disease : a decisive time point with organ dysfunction/failure as enhancer
Moreau R et al. CANONIC-trial. Gastroenterology 2013
Acute decompensation without organ failure (67,1%)
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Decompensation of chronic liver disease : a decisive time point with organ failure as enhancer
Acute decompensation with organ failure (32,9%)
Moreau R et al. CANONIC-trial. Gastroenterology 2013
22.1
32
76.6
40.7
52.3
79
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Moreau R et al. CANONIC-trial. Gastroenterology 2013
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Scores : via www or app
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Pathogenesis : a historical perspective
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Decompensation : a “hemodynamic” eventThe peripheral arterial vasodilation theory
Gines P, Shrier RW. NEJM 2009
HRS – refract ascites -
…
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Decompensation : a “hemodynamic” eventThe peripheral arterial vasodilation theory
Gines P, Shrier RW. NEJM 2009
Core factor
Primary pathogenetic
mechanism
HRS – refract ascites -
…
Effective
hypovolemia
Splanchnic
vasodilatation
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Precipitating event
Acute increase in arterial
vasodilation and decrease in
cardiac output
burst in compensatory
endogenous vasoconstrictor
systems
Resistance to portal
venous flow
Aggravation of portal
hypertension
Regional arterial
vasoconstriction
Kidney
Brain
Liver
Adrenal
gland
HRS
Encephalopathy
Liver failure
Hepatoadrenal
syndrome
Decompensation : a “hemodynamic” eventACLF driven by aggravated systemic hemodynamic dysfunction
Sen S et al. Liver Int 2002
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Decompensation : a “hemodynamic” eventThe peripheral arterial vasodilation theory REVISITED
– progressive circulatory dysfunction does not parallels
levels of endogenous vasoconstrictor systems
– Progression of renal dysfunction occurs without
progression of circulatory dysfunction
not fully accountable for mechanisms underlying
progression of decompensation
Bernardi M et al. J Hepatol 2015, in press
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synthesis
metabolisation
detoxification
Liver failure
Accumulation of
(vasoactive) toxins
Albumin-bound
Water-soluble
Circulatory
dysfunction
Cerebral
dysfunction
Renal
dysfunction
Immune
dysfunctionBile acids, bilirubin
Prostacyclins
Nitric oxide
Indol/Phenol-Metabolites
Toxic fatty acids
Ammonia
Lactate
Decompensation : a “metabolic” eventThe toxin theory
Jalan R et al Blood Purif 2002
Laleman W et al. Aliment Pharmacol Ther 2006
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synthesis
metabolisation
detoxification
Liver failure
Circulatory
dysfunction
Cerebral
dysfunction
Renal
dysfunction
Immune
dysfunction
Albumin
dialyisis
?
?
?
?
Banares R et al. MARS RELIEF Hepatology 2013
Kribben A et al. HELIOS. Gastroenterology 2012
Decompensation : a “metabolic” eventThe toxin theory
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Heemann et al, Hepatology 2002
1. MARS1. MARS: Molecular Adsorbent Recirculating System (Gambro)
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Blood is perfused through a specific membrane dialyzer that uses albumin as Molecular
Adsorbent that is Recycled in a Dialysis/Sorbent System (MARS)
Capture of albumin-
bound toxins
Removal of water-soluble
toxins : urea, ammoniaBilirubin Bile acids
Heemann et al, Hepatology 2002
1. MARS: Molecular Adsorbent Recirculating System
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the classical ‘Chicken or the egg’-dilemma
Decompensation : a “metabolic” eventThe toxin theory REVISITED
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Pathogenesis : contemporary perspective
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Sepsis & MODS (multiple organ dysfunction syndrome)
- a vicious cycle of perpetuated inflammation and spread from one compartment to another -
Spilling over of inflammatory mediators induce tissue injury in different organs with further aggravation hereof, leading to finally MODS
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Sepsis & MODS Proof of concept : excessive inflammation and MODS
Lobo SM et al Chest 2003
Vincent JL et al. Crit Care Med 1998
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“Core” factor : excessive systemic inflammation
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Balanced immune function
Resistance
Tolerance
Bacterial translocation
Decreased “effective” albumin
concentration
Cirrhosis-associated
immune dysfunction
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Balanced immune function
Resistance
Tolerance
Cirrhosis-associated
immune dysfunction
Bacterial translocation
Decreased “effective” albumin
concentration
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Bacterial translocation: the instigator to ACLF
0
5
10
15
20
25
30
35
Child A Child B Child C
3,4
8,1
30,8
Ba
cte
ria
ltr
an
slo
cation
(%)
Cirera l, Rodes J et al. J Hepatol 2001Wiest R. J Hepatol 2014
BT parallels severity of liver disease
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Bacterial translocation: the instigator to ACLF
0
5
10
15
20
25
30
35
Child A Child B Child C
3,4
8,1
30,8
Ba
cte
ria
ltr
an
slo
cation
(%)
Cirera l, Rodes J et al. J Hepatol 2001
BT parallels severity of liver disease
Waidmann O et al. J Hepatol 2013
Macrophage activation parallels
severity of liver disease & impacts on prognosis
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0
2
4
6
8
10
12
14
No ACLF ACLF-1 ACLF-2 ACLF-3
0
10
20
30
40
50
60
70
No ACLF ACLF-1 ACLF-2 ACLF-3
Leukocyte count (x109 cells) C-reactive protein (mg/L)
****
**
**
**
*
* P < 0.05 vs no ACLF
** P < 0.001 vs no ACLF
White cell count and CRP correlate with increasing severity of ACLF
Moreau R et al. CANONIC-trial. Gastroenterology 2012
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Balanced immune function
Resistance
Tolerance
Cirrhosis-associated
immune dysfunction
Bacterial translocation
Decreased “effective” albumin
concentration
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Immune hepatic surveillance(RES)
Infectious injury Non-infectious injury
TLR, NLR …TLR, NLR …
↑ Intestinal permeability
Intestinal bacterial dysbiosis
Bacterial translocation
Hepatocellular
damage/inflammation
cirrhosis
↑ PAMPs ↑ DAMPs
The stage for ACLF is set during cirrhosis progression
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Immune hepatic surveillance(RES, innate, adaptive)
Infectious injury Non-infectious injury
TLR, NLR …TLR, NLR …
RESISTANCE
“search & destroy”
TOLERANCE
“live & let live”
IL-1β, IL-6, TNF-α,
CCL2, ..
IL-10, IL1RA, sTNF-R
HLA-DR
Shape immune response
and elimination of bacteria
and infected cells
Damp inappropriate
immune responses
(“immuno-pathology”)
↑ Intestinal permeability
Intestinal bacterial dysbiosis
Bacterial translocation
Hepatocellular
damage/inflammation
Early cirrhosis
The stage for ACLF is set during cirrhosis progression
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Infectious injury Non-infectious injury
TLR, NLR …TLR, NLR …
↑ Intestinal permeability
Intestinal bacterial dysbiosis
Bacterial translocation
Hepatocellular
damage/inflammation
Evolving cirrhosis
Systemic inflammation
Activated circulating immune cells
Immune hepatic surveillance(RES, innate, adaptive)
shunting
Cirrhosis “primes” the systemic immune system
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Infectious injury Non-infectious injury
TLR, NLR …TLR, NLR …
ACLF
Spill-over & more shunting
Systemic excessive inflammation
Activated circulating immune cells
Gene activation
Expression of surface molecules of activation
(cytokine receptors, adhesion molecules)
Cytokines and growth factors production
(pro-inflammatory lymphokines and monokines)
Hepatocellular
damage/inflammation
Overwhelmed Immune hepatic
surveillance
↑ Intestinal permeability
Intestinal bacterial dysbiosis
Bacterial translocation
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Systemic inflammation in healthy individual
Gut barrier damage → translocation
Bacterial translocation
Bacterial challenge
Dynamic homeostatic variability
Courtesy of Agustin Albillos
Albillos A et al. J Hepatol 2014
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Gut barrier damage → translocation
Protracted subclinical
sterile inflammation
Bacterial translocation
Cirrhosis-associated immune dysfunction: Compensated cirrhotic patient
Courtesy of Agustin Albillos
Albillos A et al. J Hepatol 2014
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Gut barrier damage → translocation
Bacterial translocation
Predominant
“pro-inflammatory” CAID
Cirrhosis-associated immune dysfunction: Decompensated cirrhotic patient
Courtesy of Agustin Albillos
Albillos A et al. J Hepatol 2014
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Gut barrier damage → translocation
Cirrhosis-associated immune dysfunction: ACLF = immunoparalysis
Courtesy of Agustin Albillos
Albillos A et al. J Hepatol 2014
Bacterial translocation
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Cirrhosis-associated immune dysfunction: ACLF =immunoparalysis
Gut barrier damage → translocation
Predominant
“immunodeficient” CAID
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Balanced immune function
Resistance
Tolerance
Cirrhosis-associated
immune dysfunction
Bacterial translocation
Decreased “effective” albumin
concentration
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“Effective” albumin concentration is reduced in ACLFCirculating albumin is quantitatively & qualitatively reduced in cirrhosis
Jalan R et al. Hepatology 2009
Domenicali M et al Hepatology 2014
0%
20%
40%
60%
80%
100%
120%
Control Cirrhosis ACLF
11
Functional impactelectron paramagnetic resonance spectroscopy
75
100
27 28
14
Prognostic impactIschemia Modified Albumin/albumin Ratio
IMAR < 0.02
IMAR > 0.02
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Albumin & PGE2
Liver failure
“effective”
albumin
concentration
Bioavailability
of PGE2
Macrophage
and monocyte
function
O’Brien AJ et al. Nat Medicine 2014
“Effective” albumin concentration, PGE2 &
cirrhosis associated immune dysfunction
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Albumin & PGE2
“Effective” albumin concentration, PGE2 &
cirrhosis associated immune dysfunction :
exploiting the paradigm
Liver failure
“effective”
albumin
concentration
Bioavailability
of PGE2
Macrophage
and monocyte
function
O’Brien AJ et al. Nat Medicine 2014
INFECIR-2 trial, in progress
HSA 20%Albumin
dialysis
…
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Clinical picture : clinical trade-off ofsystemic inflammation
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The Systemic Inflammation-hypothesis in evolving cirrhosis
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“Periferal arterial vasodilation” meets “systemic inflammation” theory
Bernardi M et al. J Hepatol 2015,
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Clinical features
Jalan et al. J Hepatol 2015
Younger
More ascites
More alcoholic liver cirrhosis
More organ failure
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Precipitating events in CANONIC
Jalan et al. J Hepatol 2015
40% bacterial infection
23% active alcoholism
30% more than one
43% no precipitating event
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Infectious & non-infectious events precipitate
systemic inflammation in ACLF
Moreau R et al. CANONIC-trial. Gastroenterology 2012
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Role of previous decompensation
Jalan et al. J Hepatol 2015Moreau et al. Gastroenterology 2013
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Dynamic clinical course of ACLF
Gustot et al. Hepatology 2015;62(1):243-52.
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Mehta G et al. Liver Int 2015
Aggravated systemic inflammation escalates
the portal hypertensive syndrome
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Hepatic encephalopathy in ACLF is
distinct clinically, prognostically and pathophysiologically
Romero-Gomez M et al. J Hepatol 2015
Odeh A et al. Liv International 2004
Cordoba J et al. J Hepatol 2014
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The gut-liver-kidney axis
Systemic inflammation induces AKI in cirrhosis via TLR4
Shah N et al. J Hepatol 2012
Shah N et al Liver Int 2012
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Prognostic scores
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CLIF-C AD Score
Jalan et al. J hepatol 2015
CLIF-C AD score=
10 * [0.03*Age + 0.66*Ln(Creatinine) + 1.71*Ln(INR) + 0.88*Ln(WBC) –
0.05*Sodium + 8]
Age in years; Creatinine in mg/dL; WBC (white blood count) in 109
cells/L; Sodium in mmol/L.
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CLIF-C ACLF Score
Jalan et al. J Hepatol 2014
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Scores : via www or app
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Use of CLIF-C scores
Jalan et al. J Hepatol 2015
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Management of ACLF
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Management of ACLF by HBV
- At present, there is no specific therapy for ACLF aside from
antiviral therapy in patients with ACLF due to reactivation
of HBV infection.
- Administration of nucleoside analogues (tenofovir,
entecavir, lamivudine) improves liver function and
decreases mortality in patients with ACLF due to HBV
infection. Treatment should be started as early as possible.
Garg et al. Hepatology 2011
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General management of ACLF
- Treatment of ACLF should be based on organ support and
management of associated complications.
- Patients should be treated in intermediate care or intensive
care settings. Organ function, particularly, liver, kidney,
brain, lung, coagulation, and circulation should be
monitored frequently and carefully throughout
hospitalization, as ACLF is a dynamic condition.
- However, monitoring and management should be
individualized according to specific circumstances, mainly
patients’ age and comorbidities.
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Treatment of precipitating events
Early identification and treatment of precipitating factors of
ACLF, particularly bacterial infections, halts the progression
of the syndrome.
However, in some patients ACLF progresses despite
treatment of precipitating factors.
Fernandez et al. Gut 2017
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Infection & ACLF
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Antibiotics administration (NORFLOCIR)
Moreau et al. EASL 2017
SHR* 95% CI P
Unadjusted 0.586 0.346 to 0.992 0.0467
Adjusted** 0.575 0.338 to 0.979 0.0415
Months
Placebo
N=147
Norfloxacin
N=144
Cu
mu
lati
ve
In
cic
en
ce
of
Dea
th
*Fine & Gray model. **For nonselective β-blockers and corticosteroids
P=0.045 by Gray test
Child C patients
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Long-term albumin administration (ANSWER)
Caraceni/Bernardi et al. EASL 2017
albumin 40 g twice a week for the first 2 weeks, and thereafter 40 g per week
N= 431 cirhosis and uncomplicated ascites, all received standard medical treatment with anti-mineralocorticoids (at least 200 mg/day) and furosemide (at least 25 mg/day).
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Long-term albumin administration (ANSWER)
Caraceni/Bernardi et al. EASL 2017
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Liver transplantation
Liver transplantation is a very effective therapy for ACLF in
selected patients because it improves survival compared to
standard medical therapy.
A major issue for liver transplantation is high short-term
mortality of ACLF. Therefore, early referral to transplant
centers for immediate evaluation for liver transplantation is
crucial.
Gustot et al. Hepatology 2015 Artru et al. J Hepatol 2017
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Futility of care
In patients with 4 or more organ failures after one week of
adequate intensive treatment, withdrawal of on-going
intensive care support should be considered.
These patients should probably not be considered candidates
for liver transplantation due to very high mortality rate.
Gustot et al. Hepatology 2015
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Potential future therapies for ACLF
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G-CSF
A number of therapies for ACLF are under investigation. To
date, the most promising appears to be the administration of
G-CSF. However, more information is needed before this
treatment could be recommended in ACLF patients.
Garg et al. Gastroenterology 2012
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Fractioned Plasma-Separation/Absorption or Plasma-exchange
Larsen FS et al J Hepatol 2016 Fernandez et al. unpublished
Plasmapheresis in ALF
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MARS (albumin dialysis)
Bañares et al. Hepatology 2013
Bañares et al. submitted
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Ongoing studies for ACLF
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Predicting Acute-on-Chronic Liver Failure in Cirrhosis
(PREDICT) Study on behalf of the EASL-CLIF Consortium
International-European,
investigator-initiated, multicenter,
prospective, observational study
(1) critical period prior ACLF
(2) mechanisms and pathophysiology
(3) precipitating events of ACLF
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Rationale for Stratification
01/03/2018
Positive controls
Negative controlsStudy population
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Centers (54 centers)
01/03/2018
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Further just started studies
- ALIVER: The liver dialysis machine DIALIVE removes dysfunctional albumin and
endotoxins, infuses fresh, functional albumin and specifically targets systemic
inflammation using commercially available CE-marked filters in one unit. Existing
liver dialysis machines do not restore albumin function, have only a limited effect
on systemic inflammation and do not improve survival rates
- CARBALIVE: Nanoporous carbon adsorbent with tailored porosity (Yaq-001) as a
new therapeutic for the treatment of liver cirrhosis and non-alcoholic fatty liver
disease
- LIVERHOPE: SIMVASTATIN AND RIFAXIMIN AS NEW THERAPY FOR PATIENTS WITH
DECOMPENSATED CIRRHOSIS
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“Doctors are men who prescribe
medicine about which they know
little, to cure diseases of which they
know less, in human beings of
whom they know nothing”(Voltaire, 1694-1778)