Klinični pomen mutacije JAK2 pri KMPB, analiza bolnikov iz dveh slovenskih regij. Joško Vučković

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Klinični pomen mutacije JAK2 pri KMPB, analiza bolnikov iz dveh slovenskih regij Joško Vučković

Prebivalstvo Slovenije po statističnih regijah, 2002 * SLOVENIJA 1.994.084 Pomurska 130.798 Podravska 327.666 Koroška 74.477 Savinjska 258.063 Zasavska 47.149 Spodnjeposavska 72.557 Jugovzhodna Slovenija 146.200 Osrednjeslovenska 471.579 Gorenjska 194.387 Notranjsko-kraška 49.401 Goriška 120.173 Obalno-kraška 101.634 izvor: *Statistični urad Republike Slovenije, 2002

Kronične mieloproliferativne bolezni v Savinjski in Spodnjeposavski regiji 1.1.2000-31.12.2007 Dijagnoza Broj pacijenata ET 94 PV 45 PMF 30 KML 14 SKUPNO 183

Kronične mieloproliferativne bolezni v Celju 1.1.2000-31.12.2007 Dijagnoza Število pacijentov Incidenca /100.000 prebivalcev/leto ET 94 3,6 PV 45 1,7 PMF 30 1,1 KML 14 0,5 SKUPNO 183 6,9

Tabela 1. Incidenca kroničnih mieloproliferativnih obolenj (/100.000 prebivalcev/leto) Diagnoza Policitemia vera Incidenca (WHO)* 0.8-1.3 Incidenca (SBC,SBB) 1.7 Kronična mieloična levkemija Kronična idiopatska mielofibroza 1.0-1.5 0.5-1.5 0.5 1.1 Esencialna trombocitemija 1.0-2.5 3.6 *V: Jaffe ES, Lee Harris N, Slein H, Wardiman JW, eds.; Pathology and Genetics of Tumours of Haematopoietic and Lymphoid Tissues, WHO Classification of tumours. IARC Press Lyon 2001.

Tabela 2. Incidenca (/100.000 prebivalcev/leto) Esencialne trombocitemije (ET) i kronične idiopatske mielofibroze (KIM) u EZ i ZDA Država Ref. ET PMF ZDA Mesa RA et al. (1999) 2,53 1,46 Danska Jensen MK et al. (2000) 0,59 Velika Britanija McNally et al. (1997) 0.77-0.86 0,73-0,40* Švedska Kutti J et al. (2001) 1,5 0,4 Slovenija Podbregar M. Černelč P. (1999) 1,4

občina Celje 48.721 stanovnika

Kronične mieloproliferativne bolezni v Celju 1.1.2000-31.12.2007 Dijagnoza Broj pacijenata ET 23 PV 9 PMF 8 KML 0 UKUPNO 40

Kronične mieloproliferativne bolezni v Celju 1.1.2000-31.12.2007 ET Dijagnoza Broj pacijenata 23 (16 JAK2+) PV 9 PMF 8 KML 0 UKUPNO 40

Kronične mieloproliferativne bolezni v Celju 1.1.2000-31.12.2007 Dijagnoza Število pacijentov Incidenca /100.000 prebivalcev/leto ET 23 5,7 PV 9 2,0 PMF 8 2,2 KML 0 0 SKUPNO 40 9,9

Število primerov posameznih KMPB na leto

KMPB; transformacija in smrtnost ET Umrli Prevalenca December 07 107 5 CIMF 11 5 30 13 PV 55 9 10

KMPB; prevalenca ET, PV in MF ET Umrli Prevalenca December 07 86 5 CIMF 11 26,4 5 31 13 9,5 PV 41 9 10 12,6

Tabela 3. Epidemiološke značilnosti kroničnih mijeloproliferativnih bolezni v Sloveniji* Dijagnoza ET PMF PV KML ukupn o Broj pacijenata** 94 30 45 14 183 Srednja starost pri dg. 64 (19-92) 68(43-84) 65(28-88) 49(35-62) Muških 33 16 17 8 Ženskih 61 14 28 6 Incidencija /100.000/godinu 3.6 1.1 1.7 0.5 6.9 Incidencija u Celju (49.000 stanovnika) 5,7 2.0 2.2 0 9.9 *Regija Celjske i Brežičke bolnice- broj stanovnika 327.274 **U razdoblju 1.1.2000-31.12.2007)

N=94 N=44 N=55 Survival of patients with essential thrombocythemia (ET) polycythemia vera (PV) and primary myelofibrosis (MF)

Značilna odkritja na področju KMPB 1951 MPD skupina sorodnih sindromov ki imajo verjetno skupni patogeni vzrok (sir W.D) 1960 Philadelphia chromosom (Ph+) 1973 t(9;22) 1974 EEC brez Epo endogeni potencial rasti 1982 BCR-ABL fusion protein aktivnost TK 1983 potrjena klonalnost PV 2005 mutacija JAK2-V617F aktivnost TK

NOT! JustAnotherKinase

Table 2. Established and novel, potential risk factors for thrombosis in patients with polycythemia vera (PV) or essential thrombocythemia (ET). Established risk factors Potential risk factors PV Age 60 y Leukocytosis 41 Previous thrombosis V617F allele 75% 48 ET Age 60 y Leukocytosis 42 Previous thrombosis JAK2V617F mutation 44 Platelets 1500 x 10 9 /L JAK2V617F homozygosity 33

Serious vascular complications in patients with ET in relation to JAK2 mutation status complication JAK2 V617F JAK2 WT ET tested 50 patients 41 patients 91 patients ICV 6 3 9 TIA 2 0 2 AMI 4 1 5 TE 4 0 4 All complications 16 4 20 ( 22%)

Serious vascular complications in patients with ET in relation to JAK2 mutation status complication JAK2 V617F JAK2 WT ET tested 50 patients 41 patients 91 patients ICV 6 3 9 TIA 2 0 2 AMI 4 1 5 TE 4 0 4 All complications 16 4 P=0.02 20 ( 22%)

ZAKLJUČKI Tveganje za nastanek srčnožilnih dogodkov je pri bolnikih z ET in prisotno mutacijo JAK2-V617F znatno večje (p=0.02) kot pri tistih brez mutacije Za preprečevanje srčnožilnih dogodkov pri JAK pozitivnih bolnikih je potreben strožji nadzor dejavnikov tveganja za TE in aterosklerozo in verjetno tudi zgodnejše antiproliferativno zdravljenje.

Tabela 1. Incidenca kroničnih mieloproliferativnih bolezni (/100.000 prebivalcev/leto) * Diagnoza Kronična mieloična levkemija Policitemija vera Kronična idiopatska mielofibroza Esencijalna trombocitemija Incidencija 1.0-1.5 0.8-1.3 0.5-1.5 1.0-2.5 *V: Jaffe ES, Lee Harris N, Slein H, Wardiman JW, eds.; Pathology and Genetics of Tumours of Haematopoietic and Lymphoid Tissues, WHO Classification of tumours. IARC Press Lyon 2001.

Kronične mieloproliferativne bolezni (KMPB); število prvih dijagnoz ET, PV in PMF ET 107 Umrli Prevalenca December 07 PMF 30 PV 55

KMPB; transformacija in smrtnost ET Umrli Prevalenca December 07 107 5 CIMF 11 5 30 13 PV 55 9 10

Essential thrombocythemia; the rate of transition in polycythemia vera and myelofibrosis Reference Murphy S, et al (PVSG) 1997 ET Patients No Transition to PV No % Tansition to MF No % 50 3 6 3 6 7 Follow-up (years) Cervantes F, et al. 2002 Fenaux P, al. 1990 195 13 7 7 147 0 0 4 Vučković J, et al 107 5 5 5

Kronične mieloproliferativne bolezni WHO klasifikacija Kronična mieloična levkemija (KML) Ph+ kronična neutrofilna levkemija kronična eozinofilna levkemija Policitemija vera (PV) Kronična idiopatska mielofibroza (KIM) Esencialna trombocitemija Neklasificirana kronična mieloproliferativna bolezen

Kronične mieloproliferativne bolezni WHO klasifikacija Kronična mieloična levkemija (KML) kronična neutrofilna levkemija kronična eozinofilna levkemija Ph+ Policitemia vera (PV) Hb>185 (165) JAK+ Kronična idiopatska mielofibroza (KIM) Patohist. Esencialna trombocitemija Tr>450x10/9 JAK+ neklasificirana kronična mieloproliferativna bolezen

Kronične mieloproliferativne bolezni v Savinjski in Spodnjeposavski regiji 1.1.2000-31.12.2007 Dijagnoza Število pacijentov JAK2+ % ET 94 55 PV 45 97 PMF 30 46 KML 14 SKUPNO 183

Epidemiološke značilnosti KMPB v dveh Slovenskih regijah (Savinjska i Spodnjeposavska) J. Vučković