an approach to the patient with interstitial lung disease › 2019 › 11 › ild-dr-hilal.pdf ·...
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An Approach To The Patient With Interstitial lung Disease
Dr Emad Hilal
Consultant Respiratory Physician
BHR NHS Trust
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Interstitial Lung Diseases
ILD of Known Cause or
Association
Medications
Radiation
Connective Tissue Disease
Vasculitis & DAH
Hypersensitivity Pneumonitis
Pneumoconioses
Idiopathic Interstitial
Pneumonias
Sarcoidosis & Other
Granulomatous Diseases
Other
LAM
Pulmonary LCH
Eosinophilic Pneumonias
Alveolar Proteinosis
Genetic Syndromes
Adapted from: ATS/ERS Guidelines for IIP. AJRCCM. 2002;165:277-304.
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Diffuse Parenchymal Lung Disease (DPLD)
DPLD of known cause, eg, drugs or association, eg, collagen vascular disease
Idiopathic interstitial
pneumonias
Granulomatous DPLD, eg,
sarcoidosis
Other forms of DPLD, eg, LAM,
HX, etc
Idiopathic pulmonary
fibrosis
IIP other than idiopathic
pulmonary fibrosis
Desquamative interstitial pneumonia
Acute interstitial pneumonia
Nonspecific interstitial pneumonia (provisional)
Respiratory bronchiolitis interstitial lung disease
Cryptogenic organizing pneumonia
Lymphocytic interstitial pneumonia
Pleuroparenchymal fibroelastosis
Travis WD, et al; ATS/ERS Committee on Idiopathic Interstitial Pneumonias. Am J Respir Crit Care Med. 2013;188(6):733-748.
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•Age and sex •Drug history (e.g Amiodarone, Nitrofurantoin) •Occupational exposures •Pets •Joint pain / inflammation or morning stiffness •Raynaud’s phenomenon •Stiffness in fingers or toes or skin ulceration •Dry eyes/dry mouth •Family history of chest disease
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Puffy Fingers in Early Scleroderma or Mixed CTD
http://images.rheumatology.org. Accessed July 2014.
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Advanced Sclerodactyly
http://images.rheumatology.org. Accessed July 2014.
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Raynaud's Phenomenon
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Digital Clubbing
NEJM, 2001
Reynen K, et al. N Engl J Med. 2000; 343:1235
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HRCT features inconsistent with IPF Inconsistent Features
Upper lobe predominant
Peribronchovascular predominance
Ground-glass > extent of reticular abnormality
Profuse micronodules
Discrete cysts
Diffuse mosaic attenuation/gas-trapping
Consolidation
Raghu G, et al. Am J Respir Crit Care Med. 2011;183:788-824.
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Inconsistent With UIP
Hodnett PA, et al. Am J Respir Crit Care Med. 2013;188:141-149.
distinct lobular pattern
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Pulmonary Function Tests
• Spirometry
– Reduced FVC and TLC
– Normal or increased FEV1/FVC ratio
• Restriction often accompanied by some obstruction
• Impaired gas exchange
– Decreased DLCO, PaO2
– Desaturation on exercise oximetry
– Increased A-aPO2 gradient
• Normal PFTs do not exclude ILD
– Emphysema + Interstitial Lung Disease
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Blood Tests
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• Serum ACE • CTD screen • Vasculitis screen
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Idiopathic Pulmonary Fibrosis
Normal Lung Usual Interstitial Pneumonia
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Idiopathic Pulmonary Fibrosis
Normal Lung Fibroblastic Focus in
Usual Interstitial Pneumonia
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Idiopathic Pulmonary Fibrosis
Normal Lung Fibroblastic Focus in
Usual Interstitial Pneumonia
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Idiopathic Pulmonary Fibrosis
• 5000 new cases per year in UK
• Median age at presentation 68 yr, rare
under 40 yrs
• M:F 2:1
• 60% smokers
• 5000 deaths per year
Gribben et al Thorax 2006
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• Progressive fibrotic lung disease
• Median survival is around 3 years
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NICE
Be aware of idiopathic pulmonary fibrosis when assessing a patient with •age over 45 years •persistent breathlessness on exertion •persistent cough •bilateral inspiratory crackles when listening to the chest •clubbing of the fingers •normal or impaired spirometry usually with a restrictive pattern but sometimes with an obstructive pattern .
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Raghu G, et al. Am J Respir Crit Care Med. 2011;183:788-824.
2011 ATS/ERS Diagnostic Criteria for IPF
*also known as diffuse parenchymal lung disease, DPLD
Exclusion of known causes of ILD*
UIP pattern on HRCT without surgical biopsy
OR
Definite/possible UIP pattern on HRCT with a surgical lung
biopsy showing definite/probable UIP
AND
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Clinical-Radiologic-Pathologic Approach to ILD
Specific diagnosis
Clinical
picture
Radiologic pattern (HRCT)
Pathologic pattern
(lung biopsy)
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Diagnosis Matters! IPF/UIP Confers a Poor Prognosis
Flaherty KR, et al. Eur Respir J. 2002;19:275-283.
Correct diagnosis appropriate management
Cu
mu
lati
ve P
rop
ort
ion
Su
rviv
ing
Time (years)
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Genetic Factors
-Familial (autosomal dominant, up to 20%-25% of cases)
– Telomerase mutations in ~10% (TERT, TERC)
– Surfactant C mutations
– Muc 5B variants
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Drugs Infections-viruses
Radiation Other diseases
Steele MP, Schwartz DA. Annu Rev Med. 2013;64:265-276.
Exogenous and Endogenous stimuli
Microscopic lung injury: Separated spatially and temporally
Lung homeostasis Interstitial lung disease
Dust Fumes
Cigarette smoke Acid microaspirataion
Genetic predisposition
Wound healing Intact Aberrant
ILD Disease Progression
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●Unexplained development or worsening of dyspnea within 30 days ●HRCT with new bilateral ground-glass abnormality and/or consolidation superimposed on a background of UIP ●No evidence of pulmonary infection by bronchoalveolar lavage ●Exclusion of alternative causes, including left heart failure, pulmonary embolism, and other identifiable causes of acute lung injury
Definition Of Exacerbation Of IPF
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Predictors of Disease Severity and Progression in IPF
TESTS/ CLINICAL FACTORS
PREDICTIVE VALUE
FVC • Initial value and change over time correlate with mortality
DLCO • < 35% predicted lower survival
6MWT
• O2 sat 88% increased mortality risk for IPF & NSIP • Walk distance correlates with mortality • Heart rate recovery correlates with mortality
Pulmonary hypertension
• Associated with higher mortality
Dyspnea score • Correlates with survival
Hospitalization • Predicts worse survival
Ley B, et al. Am J Respir Crit Care Med. 2011;183(4):431-440.
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NICE QUALITY STANDARDS
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•Quality statement 1: MDT diagnosis of idiopathic pulmonary fibrosis •Quality statement 2: Access to a specialist nurse •Quality statement 3: Assessment for oxygen therapy • •Quality statement 4: Pulmonary rehabilitation • •Quality statement 5: Palliative care
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PANTHER 2012 Interim Results
• Triple therapy has no benefit for FVC
• Increased risk of death
Primary Triple Therapy Placebo P-value
FVC (liters) -0.24 -0.23 0.85
Raghu G, et al. N Engl J Med. 2012;366:1968-1977.
Pro
bab
ility
Time to Death Kaplan–Meier Analysis
Weeks Since Randomization
HR 9.26 (95% CI 1.16-74.1)
P = 0.01
ATS 2011
2011-2013 2014 Pre-2011
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Three IPF Clinical Trials American Thoracic Society 2014
• PANTHER N-acetylcysteine (NAC)
• ASCEND pirfenidone
• INPULSIS nintedanib (BIBF1120)
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Possible Mechanisms of Pirfenidone Action
Hilberg O, et al. Clin Respir J. 2012;6:131-143.
TNF-α IL-6
Pirfenidone
TGF-β IL-6
MMPs Collagenases
ROIs
Collagen
• Antifibrotic
• Molecular target unclear
• Active in several animal models of fibrosis (lung,
liver, kidney)
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Noble P, et al. Lancet. 2011;377:1760-1769.
CAPACITY 2011
CAPACITY-2 CAPACITY-1
• One pirfenidone trial was positive, one was negative
• CAPACITY-1 placebo group FVC declined more slowly than expected
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CAPACITY Endpoints
Endpoint CAPACITY-2 CAPACITY-1
FVC X
Overall survival X X
Progression-free survival X
Six-minute walk distance X
DLCO X X
Dyspnea X X
Exertional desaturation X X
Noble P, et al. Lancet. 2011;377:1760-1769.
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•FVC: between 50% and 80% predicted • The manufacturer provides pirfenidone with the discount agreed in the patient access scheme . Treatment with pirfenidone should be discontinued if there is evidence of disease progression (a decline in FVC of 10% or more within any 12-month period).
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Primary ASCEND Endpoint Achieved
King TE, et al. N Engl J Med. 2014;370(22):2083-2092.
Pat
ien
ts w
ith
≥ 1
0%
FV
C
De
clin
e o
r D
eat
h (
%)
Week
Primary Endpoint
48% Relative Reduction
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Pirfenidone Reduces Loss of FVC
<0.000001 King TE, et al. N Engl J Med. 2014;370(22):2083-2092.
235 ml
428 ml
Rank ANCOVA P-value < 0.00001 at each indicated time point
Me
an C
han
ge (
ml)
Week
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King TE, et al. N Engl J Med. 2014;370(22):2083-2092.
ASCEND Summary
• Treatment with pirfenidone for 52 weeks significantly reduced disease progression, as measured by
– Changes in % predicted FVC (P < 0.001)
– Changes in 6-minute walk distance (P = 0.04)
– Progression-free survival (P < 0.001)
• Treatment with pirfenidone reduced all-cause mortality and treatment emergent IPF-related mortality in pooled analyses at week 52
• Pirfenidone was generally safe and well tolerated
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http://www.accessdata.fda.gov/scripts/cder/drugsatfda/index.cfm?fuseaction=Search.DrugDetails/. Accessed October 2014.
Pirfenidone Warnings and Precautions Temporary dosage reductions or discontinuations may be required
• Elevated liver enzymes: ALT, AST, and bilirubin elevations have occurred with pirfenidone. Monitor ALT, AST, and bilirubin before and during treatment.
• Photosensitivity and rash: Photosensitivity and rash have been noted with pirfenidone. Avoid exposure to sunlight and sunlamps. Wear sunscreen and protective clothing daily.
• Gastrointestinal disorders: Nausea, vomiting, diarrhea, dyspepsia, gastro-esophageal reflux disease, and abdominal pain have occurred with pirfenidone.
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INPULSIS Nintedanib
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Possible Mechanisms of Nintedanib Action
• Triple kinase inhibitor
• Phosphatase activator
• Antiangiogenic, antitumor activity
VEGF
Nintedanib
PDGF FGF SHP-1
Hilberg F, et al. Cancer Res. 2008;68(12):4774-4782. Tai WT, et al. J Hepatol. 2014;61(1):89-97.
Pleiotropic Effects
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Richeldi L, et al. N Engl J Med. 2014;370(22):2071-2082.
Primary INPULSIS Endpoint Achieved Annual Rate of Change of FVC
INPULSIS-1 INPULSIS-2
45% Relative Reduction
52% Relative Reduction
Nintedanib Placebo
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Nintedanib Reduces Loss of FVC
INPULSIS-1
INPULSIS-2
Me
an O
bse
rve
d C
han
ge f
rom
Bas
elin
e in
FV
C (
mL)
Richeldi L, et al. N Engl J Med. 2014;370(22):2071-2082. Week
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Mixed Findings for Time to First Acute Exacerbation
Cu
mu
lati
ve In
cid
ence
of
Firs
t A
cute
Exa
cerb
atio
n (
%)
INPULSIS-1
INPULSIS-2
Richeldi L, et al. N Engl J Med. 2014;370(22):2071-2082. Days
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Richeldi L, et al. N Engl J Med. 2014;370(22):2071-2082.
Common Nintedanib Adverse Events
Event
INPULSIS-1 INPULSIS-2
Nintedanib (n = 309)
Placebo (n = 204)
Nintedanib (n = 329)
Placebo (n = 219)
Any (%) 96 89 94 90
Diarrhea (%) 62 19 63 18
Nausea(%) 23 6 26 7
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Richeldi L, et al. N Engl J Med. 2014;370(22):2071-2082.
INPULSIS Conclusions
• Nintedanib reduced the decline in FVC, which is consistent with a slowing of disease progression
• Nintedanib was frequently associated with diarrhea, which led to discontinuation of the study medication in less than 5% of patients
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Consider follow-up of people with idiopathic pulmonary fibrosis: • every 3 months or sooner if they are showing rapid disease progression or rapid deterioration of symptoms or •every 6 months or sooner if they have steadily progressing disease or •initially every 6 months if they have stable disease and then annually if they have stable disease after 1 year.
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NICE In follow-up appointments for people with idiopathic pulmonary fibrosis: •assess lung function •assess for oxygen therapy • assess for pulmonary rehabilitation •offer smoking cessation advice, in line with Smoking cessation services • identify exacerbations and previous respiratory hospital admissions • consider referral for assessment for lung transplantation in people who do not have absolute contraindications •consider psychosocial needs and referral to relevant services as appropriate • consider referral to palliative care services •assess for comorbidities (which may include: anxiety, bronchiectasis, depression, diabetes, dyspepsia, ischaemic heart disease, lung cancer and pulmonary hypertension).
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QUESTIONS?