a gp guide to inflammatory bowel disease dr azhar ansari mrcp md consultant gastroenterologist &...
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A GP guide to Inflammatory A GP guide to Inflammatory Bowel DiseaseBowel Disease
Dr Azhar Ansari MRCP MD Dr Azhar Ansari MRCP MD Consultant Gastroenterologist Consultant Gastroenterologist
& Lead in IBD& Lead in IBDEast SurreyEast Surrey
Case report 1Case report 1HesterHester
Age 18: UC: steroid dependant Age 18: UC: steroid dependant
Age 26: AZA 2mg/kg: hepatotoxicity (1999)Age 26: AZA 2mg/kg: hepatotoxicity (1999)
Standard treatment: surgery: scheduledStandard treatment: surgery: scheduled
Interruption of medical studies: 1Interruption of medical studies: 1stst year clinical year clinical
Tx: ???Tx: ???
Case report 2Case report 2Daniel Age 19 yearsDaniel Age 19 years
Age 12: CD Age 12: CD
Neutropenia on high dose 6MP: NO responseNeutropenia on high dose 6MP: NO response
Age 14: Infliximab effective for 18 months, then Age 14: Infliximab effective for 18 months, then loss of response loss of response
Age 16: Ileostomy then reversalAge 16: Ileostomy then reversal
Steroid dependency: Avascular necrosis- Steroid dependency: Avascular necrosis- bilateral hip replacementsbilateral hip replacements
Age 18: Transferred to adult clinicAge 18: Transferred to adult clinic
Tx: ???Tx: ???
Case 3Case 3Maria DF 22Maria DF 22
Age 18: CD: Ileo-colonic and perianal. Severe Age 18: CD: Ileo-colonic and perianal. Severe eczemaeczema
Long steroid dependencyLong steroid dependency
Poor response to AZAPoor response to AZA
Loss of weight, social life, employment and self Loss of weight, social life, employment and self esteemesteem
Management: A blood test and colonoscopy.Management: A blood test and colonoscopy.
Tx: ???Tx: ???
Case 4Case 4Susan T 39Susan T 39
Age 22: CDAge 22: CD
Age 28: Ileal resection, stoma and reversal-Age 28: Ileal resection, stoma and reversal-complicated by a fistula. complicated by a fistula.
Age 37: AZA and steroids 10 years: Abdominal Age 37: AZA and steroids 10 years: Abdominal abscess and re-opening of entero-cutaneous abscess and re-opening of entero-cutaneous fistula 2010fistula 2010
Tx: ???Tx: ???
MRI Susan TMRI Susan T
20 surgeries over 12 years
Post treatment
Aims of treatment for IBDAims of treatment for IBD
Achieve remissionAchieve remission
Maintain remissionMaintain remission
Prevent complicationsPrevent complications
Improve quality of lifeImprove quality of life
Multi-disciplinary approach to treatment: Physician, Multi-disciplinary approach to treatment: Physician, Surgeon, IBD nurse Specialist, Dietician, Pharmacist and Surgeon, IBD nurse Specialist, Dietician, Pharmacist and Psychological support. Transition Clinic. MDM Psychological support. Transition Clinic. MDM discussionsdiscussions
UC in Childhood CRC 40%40 years
CD: Similar Findings
Natural History of UCNatural History of UC
UC acute attack Death 33%
Subsequent acute attack Death 12%
Edwards &Truelove 1963
Devroede 1971
UC Death 40%40 years
Weedon 1971
CD Inflammatory: 70% CD: Perforating Strictureing 70%
20 years
CD: Medical therapy: >90%AZA/6MP: 80%Monoclonals: 10-20%
Surgical therapy: 80%>1 Surgery 60%
20 years
UC5ASA: ChemopreventionSteroids Immunosupressives
UC: Failure of medical therapyRelapsing remitting course
20 years
UC: Medical therapy: 90% Surgical therapy: 20%20 years
Natural History past decade
Toxic ColonToxic Colon
Clinical Course of UCClinical Course of UC
Crohn’s Colon
Crohn’s ColonCrohn’s Fistula: Seton
Crohn’s SurgeryBy Permission from Mr CarapetiGuy’s and St Thomas’
Perianal Crohn'sPerianal Crohn'sMild Disease Mild Disease
Perianal Crohn'sPerianal Crohn'sModerate DiseaseModerate Disease
Perianal Crohn'sPerianal Crohn'sSevere DiseaseSevere Disease
Facts and FiguresFacts and Figures
IBD affects 1:400IBD affects 1:400
Doubling in CD over 30 years.Doubling in CD over 30 years.
Young at risk: Teenagers/young adults second peak Young at risk: Teenagers/young adults second peak 50yrs50yrs
North Europe> S Europe. North UK > S UKNorth Europe> S Europe. North UK > S UK
““White collar” White collar”
£720 million/year. 14% of patients (hospitalisations & £720 million/year. 14% of patients (hospitalisations & surgeries) account for 50% of costsurgeries) account for 50% of cost
Cost per 6 months £1200 (UC) and £1600 (CD)Cost per 6 months £1200 (UC) and £1600 (CD)
Quiescent vs relapse = X3 ↑ costsQuiescent vs relapse = X3 ↑ costs
Hospitalisations = X20.Hospitalisations = X20.
Facts and FiguresFacts and FiguresSurgical Risk: CD 80% (most have >1 surgeries), UC 15-Surgical Risk: CD 80% (most have >1 surgeries), UC 15-40%40%
Chronic inflammation leads to the dysplasia Chronic inflammation leads to the dysplasia
Dysplasia = Severe: 40%, Mild 20% risk Synch. CRC. Dysplasia = Severe: 40%, Mild 20% risk Synch. CRC.
Extensive UC greatest risk of CRC: most significant after Extensive UC greatest risk of CRC: most significant after 10 yrs10 yrs– Risk 10-15%. 6-10x higher than normal populationRisk 10-15%. 6-10x higher than normal population
CD similar risk of CRC (surgeries may affect rate)CD similar risk of CRC (surgeries may affect rate)
Facts and FiguresFacts and Figures
Life time risk of steroids: 60-80% Life time risk of steroids: 60-80%
Osteoporosis: Steroids, inflammation and Osteoporosis: Steroids, inflammation and malnutrition assoc. malnutrition assoc.
Risk of fractures: 40% higher for IBD suffersRisk of fractures: 40% higher for IBD suffers
Osteoporosis: significant cost implicationsOsteoporosis: significant cost implications
IBD patients have shorter/”poorer” lives: 10ysIBD patients have shorter/”poorer” lives: 10ys
Incidence / prevalenceIncidence / prevalence
Incidence UCIncidence UC 10: 100,00010: 100,000
Incidence CDIncidence CD 6-7: 100,000 (increasing)6-7: 100,000 (increasing)
Prevalence about 150:100,000 for each Prevalence about 150:100,000 for each
IBD Cases in East Surrey Area = 1,000-IBD Cases in East Surrey Area = 1,000-1,500 1,500
CD
UC
Ulcerative colitis rates similar To Europe.Immigrant populations very high
Crohn’s disease rates lowerthan N Europe.Immigrant populations high.Significant increase in children
UK 13 300 new cases diagnosed each year150 000 IBD total andapproximately 2.2 million across Europe
Disease LocationDisease Location
UC: recto-sigmiod: 30-50% Left sided: 20-30% Pancolitis: 20-30%
CD: Colonic: 33% Ileocolonic: 33% Small bowel: 30%
Perianal: 23%Upper GI: 2-4%
Extra-intestinal ManifestationsExtra-intestinal Manifestations
Upto 36%Some ass with disease activity: Joint, skin, occular and oralUveitis/episcleritis: commonest 4-12%Arthropathies: Axial or peripheral (type I and II): 4-23%Erythema nodosum/PG: 2-34%Hepato-biliary: 5-15% PSC assoc with CRC and CholangioCa
CD: 50% higher than general popultion. Life expentancy 10 years lessDeaths: Cancers, VTE’sUC: slightly higher morality than general population. Risk of CRC falling
MortalityMortality
Uveitis
episcleritis
Erythema Nosdum
Peristomal Pyoderma gangrenosum
30 days full remission
UC: 31% 30 days partial remission
30 days NON RESPONSE
UC: 51%
UC: 18%
CD: 35%
CD: 40%
CD: 25%
The efficacy of corticosteroid therapy in inflammatory bowel disease: analysis of a 5-year UK inception cohort.
Ho GT 2006 AP&T
Steroids 30 day responseSteroids 30 day response
1 yr prolonged response
UC: 17% 1 yr steroid dependence
1 yr surgery
UC: 55%
UC: 21%
CD: 24%
CD: 38%
CD: 35%
The efficacy of corticosteroid therapy in inflammatory bowel disease: analysis of a 5-year UK inception cohort.
Ho GT 2006 AP&T
Although corticosteroids are effective, dependence/resistance remains common. Patients with extensive ulcerative colitis and fistulizing/stricturing Crohn's are most at risk of failing corticosteroid therapy.
Need for steroids within 5 yrs: CD: 75%, UC: 63%
Steroids 1 year responseSteroids 1 year response
High risk (RR>2)
Modifiable• Low weight (BMI <20 – 25 or <40 kg)• Weight loss > 10%• Physical inactivity• Steriods• Use of anticonvulsants
Non-modifiable• Age > 70 years• Prior osteoporotic fracture
Moderate risk (RR 1-2)
Modifiable• Smoking• Low calcium intake
Non-modifiable• Female• Untreated early menopause (<45)• Late menarche (>15)• Short fertile period (<30 years)• Family history of osteoporotic fracture
BSG Guidelines IBD/Coeliac Lewis, BB Scott 2007
• Exercise + nutritious diet• Ca: 1g/day (1.2g for PM women) Adcal (600mg) and Sandocal-400 (400mg)• Treat vit. D deficiency. • Stop smoking• Avoid alcohol excess
Achieve/maintain remission= Steroid avoidance
• Azathioprine/mercaptopurine• budesonide • elemental or polymeric diet • biologic/surgery if steroid-free remission not achieved
For those on steroids
• >65: consider bisphosphonate at commencement of steroids • <65 at high risk and requiring steroids >3 months: DEXA and consider bisphosphonate if T-score<-1.5
• Vitamin D and calcium whilst on steroids: Adcal D3 Calcichew D3 Forte I bd
General BONE advice
Classification of ulcerative colitisAdapted Kornbluth and Sachar 2004.
Mild Moderate Severe Fulminant
<4 stools +/- blood No systemic signs of toxicity Normal ESR
>4 stools Minimal signs of toxicity
>6 bloody stools Evidence of toxicity: fever, tachycardia, anemia, elevated ESR
>10 movements bleeding Abdominal tenderness distension Blood transfusion requirement Colonic dilatation
DefinitionsDefinitions
Severe colitisSevere colitis (Truelove and Witts Br Med J 1955)(Truelove and Witts Br Med J 1955)
6 or more bloody stools per day6 or more bloody stools per day
Temp > 37.5Temp > 37.5
tachycardia > 90tachycardia > 90
Hb < 10.5Hb < 10.5
ESR >30ESR >30
Toxic / ‘fulminant’Toxic / ‘fulminant’
fever, abrupt onset, abdo tenderness, colicky pain, anorexia. Considered toxic if ‘severe’ fever, abrupt onset, abdo tenderness, colicky pain, anorexia. Considered toxic if ‘severe’ colitis + 2 or more of fever >38.6, tachy >100, WCC >10.5 and low albumincolitis + 2 or more of fever >38.6, tachy >100, WCC >10.5 and low albumin
Toxic megacolonToxic megacolon
First recognised in 1950 First recognised in 1950 (Marshak (Marshak et al.,et al., Gastroenterology 1950;16768) Gastroenterology 1950;16768)
‘‘Segmental or total colonic distension of > 6cm in the presence of acute colitis and signs of Segmental or total colonic distension of > 6cm in the presence of acute colitis and signs of toxicity’toxicity’
Different preparations of mesalamine for UC therapy
Delayed release Slow release Prodrugs Prodrugs Topicals Sulfasalazine
Formulation Asacol Pentasa Olsalazine Balsalazide Mesalamine enema
CostCheapest per gram if SSZ and salofalk excluded
Preparation Enteric coated 400 mgCapsule 250 mg or 500 mg1 gram sachets
Capsule 250 mg Capsule 750 mg4 g/60 ml rectal suspension 1 g rectal suppository
Solubility pH > or equal 7 Continuous release pH independent pH independent
Location of delivery Terminal ileium Small bowel, colon Colon Colon Rectum Small bowel, colon
Maintenance of remission
2–4 g/day 2–4 g/day 1 g/day 2.25 g TID 4 g/day 2 g/day
Mild to moderate 2.4 to 4.8 g/daily 2–4 g/daily 2–3 g/daily 6.75 g/day 4 g/per rectum 3–4 g/day
Active disease proctitis
TID dosingTDS dosingOnce dailyRectal therapy
BID dosing TID dosing
BID 1g/BID Active disease: 1 g BID (suppository) or 4 g enema qd or BID Maintenance:1 g supp. Daily or prn symptoms
BD-QID dosing
How to improve 5ASA How to improve 5ASA ResponseResponse
Ascend II
Marteau2004
Safdi 97
1. Use higher dose of 5ASA2. Use rectal therapy in extensive UC3. Use rectal therapy in left sided UC4. Rectal therapy can help: use for at least 2 weeks
ImmunosuppressivesImmunosuppressives
CD: 70-80% start AZA/6MPCD: 70-80% start AZA/6MP
UC: 40% start AZA/6MPUC: 40% start AZA/6MP
Side effects-30-40%, poor response in 20-Side effects-30-40%, poor response in 20-30% of those who tolerate treatment30% of those who tolerate treatment
Can we improve on this?Can we improve on this?
ImmunosuppressivesImmunosuppressives
Low dose AZA/6MP* + allopurinol **Low dose AZA/6MP* + allopurinol **
Few side effects. Monitored exactly as full Few side effects. Monitored exactly as full dose AZA/6MPdose AZA/6MP
Attains response in poor responders: 70%Attains response in poor responders: 70%
By passes ADRs: GI disturbance, flu like By passes ADRs: GI disturbance, flu like symptoms and hepatotoxicitysymptoms and hepatotoxicity
Patients: Reduced surgeries, hospitalisations Patients: Reduced surgeries, hospitalisations and high cost drug expenditure.and high cost drug expenditure.
• * 1/4-1/3 TPMT adjusted dose• ** 50-100mg
Alternative Immunosuppressive/ Alternative Immunosuppressive/ treatmentstreatments
MethotrexateMethotrexate
T(h)ioguanineT(h)ioguanine
MychophenolateMychophenolate
CyclophosphamideCyclophosphamide
Ant-Mycobacterial therapy/ThalidomideAnt-Mycobacterial therapy/Thalidomide
Autologous Stem Cell TransplantationAutologous Stem Cell Transplantation
Monoclonals: Infliximab & AdalimumabMonoclonals: Infliximab & Adalimumab
Shared care and protocolsShared care and protocols
Available for:Available for:
6MP/AZA6MP/AZA
MTXMTX
CiclosporinCiclosporin
Thioguanine- soon to be submitted to D&TThioguanine- soon to be submitted to D&T
Infliximab/AdalimumabInfliximab/Adalimumab
Heterocyclic bases and Heterocyclic bases and analogues of nucleosidesanalogues of nucleosides
Hitchings and ElionHitchings and Elion
DiaminopurineDiaminopurine
6-Thioguanine6-Thioguanine
6 Mercaptopurine 6 Mercaptopurine
AzathioprineAzathioprine
AllopurinolAllopurinol
PyrimethaminePyrimethamine
TrimethoprimTrimethoprim
PiritreximPiritrexim
AcyclovirAcyclovir
Zidovudine (AZT) (Barry 1986)Zidovudine (AZT) (Barry 1986)
DiscoveriesDiscoveriesITPA gene characterisedITPA gene characterisedITPA predicts side effects: patented and NHS awardITPA predicts side effects: patented and NHS awardTPMT predicts responseTPMT predicts responseTGN do not predict responseTGN do not predict responseTPMT heterozygotes high risk of ADRTPMT heterozygotes high risk of ADRIntroduced deliberate use of allopurinol to improve Introduced deliberate use of allopurinol to improve hepatotoxicity and side effect and response to AZAhepatotoxicity and side effect and response to AZARole of Xanthine oxidase in CD patients exposed to AZARole of Xanthine oxidase in CD patients exposed to AZAMDRP predicts resistance to AZAMDRP predicts resistance to AZAAldehyde dehydrogenase predicts response to AZAAldehyde dehydrogenase predicts response to AZA6TG can b used safely in IBD6TG can b used safely in IBDMTHFR polymprphisms protect from Side effectsMTHFR polymprphisms protect from Side effectsVNTR do not modify TPMT activityVNTR do not modify TPMT activityTPMT activity is not induced by AZA/6MPTPMT activity is not induced by AZA/6MP
Prospective evaluation of the pharmacogenetics of azathioprine in the treatment of inflammatory bowel disease.Ansari A, Arenas M, Greenfield SM, Morris D, Lindsay J, Gilshenan K, Smith M, Lewis C, Marinaki A, Duley J, Sanderson J.Aliment Pharmacol Ther. 2008 Oct 15;28(8):973-83.
Long-term outcome of using allopurinol co-therapy as a strategy for overcoming thiopurine hepatotoxicity in treating inflammatory bowel diseaseA. ANSARI1, T. ELLIOTT1, B. BABURAJAN1, P. MAYHEAD1, J. O’DONOHUE2, P. CHOCAIR3, J. SANDERSON1, J. DULEY4
Alimentary Pharmacology & TherapeuticsVolume 28, Issue 6, pages 734–741, September 2008
Low-dose azathioprine or mercaptopurine in combination withallopurinol can bypass many adverse drug reactions in patientswith inflammatory bowel diseaseA. ANSARI * ,, N. PATEL, J. SANDERSON, J. O’DONOHUE§, J. A. DULEY– & T. H. J. FLORIN**Alimentary Pharmacology & Therapeutics
Thiopurine methyltransferase activity and the use of azathioprine in inflammatory bowel disease.Ansari A, Hassan C, Duley J, Marinaki A, Shobowale-Bakre EM, Seed P, Meenan J, Yim A, Sanderson J.Aliment Pharmacol Ther. 2002 Oct;16(10):1743-50.
Novel pharmacogenetic markers for treatment outcome in azathioprine-treated inflammatory bowel disease M.A. Smith; A.M. Marinaki; M. Arenas; M. Shobowale-Bakre; C. M. Lewis; A. Ansari; J. Duley; J.D. Sanderson
Further experience with the use of 6-thioguanine in patients with Crohn's disease.Ansari A, Elliott T, Fong F, Arenas-Hernandez M, Rottenberg G, Portmann B, Lucas S, Marinaki A, Sanderson J. Inflamm Bowel Dis. 2008 Oct;14(10):1399-405.
Influence of xanthine oxidase on thiopurine metabolism in Crohn's disease.Ansari A, Aslam Z, De Sica A, Smith M, Gilshenan K, Fairbanks L, Marinaki A, Sanderson J, Duley J. Aliment Pharmacol Ther. 2008 Sep 15;28(6):749-57.
Mutation in the ITPA gene predicts intolerance to azathioprineMarinaki, AM, Duley, JA, Arenas, M, Ansari, A, Sumi, S, Lewis, CM, Shobowale-Bakre, M, Fairbanks, LD and Sanderson, J (2004) Mutation in the ITPA gene predicts intolerance to azathioprine. Nucleosides Nucleotides & Nucleic Acids, 23 8-9: 1393-1397
Adverse drug reactions to azathioprine therapy are associated with polymorphism in the gene encoding inosine triphosphate pyrophosphatase (ITPase) Marinaki Anthony M, Ansari Azhar, Duley John A, Arenas Monica, Sumi Satoshi, Lewis Cathryn M, Shobowale-Bakre El-Monsor, Escuredo Emilia, Fairbanks Lynette D, Sanderson Jeremy D
Pharmacogenetics (2004).
HistoryHistorystool frequency/consistency/blood or mucusstool frequency/consistency/blood or mucusWeight lossWeight lossdietdietUrgency / pain / bloating / nocturnal diarrhoeaUrgency / pain / bloating / nocturnal diarrhoeaAssociated symptoms (fatigue, joint/eye/skin Associated symptoms (fatigue, joint/eye/skin problems,mouth ulcers)problems,mouth ulcers)duration diseaseduration diseasemedication (Abx/NSAIDs)medication (Abx/NSAIDs)TravelTravelFamily historyFamily historySmoking / alcoholSmoking / alcohol
ExaminationExamination
fever, tachycardia, abdo findings fever, tachycardia, abdo findings (tender/peritonitic)(tender/peritonitic)
EIM’sEIM’s
Weight / BMIWeight / BMI
InvestigationInvestigation
FBC, CRP, ESR, U&E, LFTs, anti TTG, glucose, TFTstool cultures
Differential diagnosesDifferential diagnoses
InfectiveInfective– Bacterial: salmonella, shigella, Bacterial: salmonella, shigella,
campylobacter, E coli (O157), Gonococcal campylobacter, E coli (O157), Gonococcal proctitis, C difficileproctitis, C difficile
– Viral: HS (or chlamydial) proctitis, CMVViral: HS (or chlamydial) proctitis, CMV
– Protozoal: amoebiasisProtozoal: amoebiasis
Differential diagnosesDifferential diagnoses
Non-infectiveNon-infectiveVascular: ischaemic colitisVascular: ischaemic colitisIdiopathic: microscopic colitisIdiopathic: microscopic colitisDrugs (eg) NSAIDsDrugs (eg) NSAIDsNeoplasiaNeoplasiaRadiationRadiationBehcet’sBehcet’sDiverticulitisDiverticulitis
Investigation of IBDInvestigation of IBD
BloodsBloods
Stool MCSStool MCS
EndoscopyEndoscopy
CTCT
MRI small bowel: Crohn’s disease evaluationMRI small bowel: Crohn’s disease evaluation
Faecal calpotectin/ Small bowel permeabilityFaecal calpotectin/ Small bowel permeability
(Barium imaging: Becoming out-dated)(Barium imaging: Becoming out-dated)
Known UC when to worry / referKnown UC when to worry / refer
‘‘Flare’ suggested by increased stool Flare’ suggested by increased stool frequency, pain, urgency, blood, mucus, frequency, pain, urgency, blood, mucus, weight loss, constitutional symptomsweight loss, constitutional symptoms
Fever, tachycardiaFever, tachycardia
What is current Rx?What is current Rx?
How were previous flares managed?How were previous flares managed?
Algorithm for managing ulcerative Algorithm for managing ulcerative colitiscolitis
MILD MODERATE SEVERE
5 ASA / steroid(topical:supp/enema)
PROCTITIS
LEFT SIDED
PANCOLITIS
5 ASA / steroid(topical:enema
+ Oral)
5 ASA(Oral+/-topical)
5 ASA / steroid(topical:supp/enema)
+/-Oral steroids
+/-Immunomodulator
(azathioprine/6MP/ thioguanineMTX,Mycophenolate)
+/-surgery
ParenteralSteroids +/-Ciclosporin +/-surgery
Crohn’s disease diagnosis
surgery
steroidsElemental diet
Antituberculous chemotherapy
worms
Thiopurines (TP): AZA/6MP
methotrexate
Anti-TNF α strategies
antibiotics
natalizumab
Leucocytophoresis
Stop smoking
infliximab
adalimumab
Thalidomide?
5 ASAs
Tacrolimus
Stem cell Tx
Low dose TP + Allopurinol
Thioguanine
TPN
MiscellaneousMiscellaneous
Give Ca / vit D with prednisoloneGive Ca / vit D with prednisolone
Long term steroids are not an answerLong term steroids are not an answer
Get smokers with CD to stopGet smokers with CD to stop
Where are bloods monitored?Where are bloods monitored?
IBD nurse specialistIBD nurse specialist
How to referHow to refer
IBD clinics: Monday & Thursday East SurreyIBD clinics: Monday & Thursday East Surrey
Wednesday CrawleyWednesday Crawley
Flares – open accessFlares – open access
On call registrar/GI RegistrarOn call registrar/GI Registrar
IBD nurse specialist: Helen McSorelyIBD nurse specialist: Helen McSorely
Email: Email: [email protected] ext 2815 ext 2815
The EndThe End