ABSTRACT
It is well known that the clinical phenotype of hemophilia may vary greatly among
patients with the same apparent level of coagulation factor and the same genetic mutation.
Thus, patients with severe hemophilia may experience a severe phenotype or only a
milder bleeding tendency, suggesting some other moderating influence. To elucidate
the mechanism of this heterogeneity, some investigators have recently suggested that
inherited thrombophilic factors may play a role in the milder clinical presentation
of severe hemophilia. In this review, we summarize current knowledge with respect
to the modulation of the clinical phenotype of severe hemophilia by prothrombotic
genetic risk factors. Although the published literature seems to indicate a protective
effect for the coinheritance of factor V Leiden, the limited data available do not
permit any firm conclusions. Further trials on a large population of patients are
needed to establish the role of genetic thrombophilia in the phenotypic expression
of severe hemophilia.
KEYWORDS
Severe hemophilia - inherited thrombophilia - bleeding - thrombosis
REFERENCES
1
Hoyer L W.
Hemophilia A.
N Engl J Med.
1994;
330
38-47
2
Franchini M, Veneri D.
Thrombosis and bleeding: when opposites are not so far apart.
Clin Lab.
2005;
51
173-182
3
Franchini M, Mannucci P M.
Interactions between genotype and phenotype in bleeding and thrombosis.
Haematologica.
2008;
93
649-652
4
van Dijk K, van der Bom J G, Fischer K, Grobbee D E, van den Berg H M.
Do prothrombotic factors influence clinical phenotype of severe haemophilia? A review
of the literature.
Thromb Haemost.
2004;
92
305-310
5
Dargaud Y, Meunier S, Negrier C.
Haemophilia and thrombophilia: an unexpected association!.
Haemophilia.
2004;
10
319-326
6
Tizzano E F, Cornet M, Domènech M, Baiget M.
Modifier genes in haemophilia: their expansion in the human genome.
Haemophilia.
2002;
8
250-254
7
van den Berg H M, De Groot P H, Fischer K.
Phenotypic heterogeneity in severe hemophilia.
J Thromb Haemost.
2007;
5(Suppl 1)
151-156
8
Oldenburg J, Schröder J, Schmitt C, Brackmann H H, Schwaab R.
Small deletion/insertion mutations within poly-A runs of the factor VIII gene mitigate
the severe haemophilia A phenotype.
Thromb Haemost.
1998;
79
452-453
9
Young M, Inaba H, Hoyer L W, Higuchi M, Kazazian Jr H H, Antonarakis S E.
Partial correction of a severe molecular defect in hemophilia A, because of errors
during expression of the factor VIII gene.
Am J Hum Genet.
1997;
60
565-573
10
Franchini M.
Thrombotic complications in patients with hereditary bleeding disorders.
Thromb Haemost.
2004;
92
298-304
11
Nowak-Göttl U, Escuriola C, Kurnik K et al..
Haemophilia and thrombophilia. What do we learn about combined inheritance of both
genetic variations?.
Hamostaseologie.
2003;
23
36-40
12
Ettingshausen C E, Kurnik K, Schobess R et al..
Catheter-related thrombosis in children with hemophilia A: evidence of a multifactorial
disease.
Blood.
2002;
99
1499-1500
13
Escuriola-Ettingshausen C, Halimeh S, Kurnik K et al..
Symptomatic onset of severe hemophilia A in childhood is dependent on the presence
of prothrombotic risk factors.
Thromb Haemost.
2001;
85
218-220
14
Ettingshausen C E, Saguer M I, Kreuz W.
Portal vein thrombosis in a patient with severe hemophilia A and F V G1691A mutation
during continuous infusion of factor VIII after intramural jejunal bleeding – successful
thrombolysis under heparin therapy.
Eur J Pediatr.
1999;
158
S180-S182
15
Pruthi R K, Heit J A, Green M M et al..
Venous thromboembolism after hip fracture surgery in a patient with haemophilia B
and factor V Arg506Gln (factor V Leiden).
Haemophilia.
2000;
6
631-634
16
Olcay L, Gürgey A, Topaloglu H, Altay S, Parlak H, Firat M.
Cerebral infarct associated with factor V Leiden mutation in a boy with hemophilia
A.
Am J Hematol.
1997;
56
189-190
17
Iannaccaro P, Santoro R, Sottilotta G, Papaleo G, Muleo G.
Thrombosis in hemophiliacs with prothrombotic molecular defect.
Clin Appl Thromb Hemost.
2005;
11
359-360
18
Price V E, Carcao M, Connolly B et al..
A prospective, longitudinal study of central venous catheter-related deep venous thrombosis
in boys with hemophilia.
J Thromb Haemost.
2004;
2
737-742
19
Nichols W C, Amano K, Cacheris P M et al..
Moderation of hemophilia A phenotype by the factor V R506Q mutation.
Blood.
1996;
88
1183-1187
20
Lee D H, Walker I R, Teitel J et al..
Effect of the factor V Leiden mutation on the clinical expression of severe hemophilia
A.
Thromb Haemost.
2000;
83
387-391
21
Grünewald M, Siegemund A, Grünewald A, Konegan A, Koksch M, Griesshammer M.
Paradoxical hyperfibrinolysis is associated with a more intensely haemorrhagic phenotype
in severe congenital haemophilia.
Haemophilia.
2002;
8
768-775
22
Kurnik K, Kreuz W, Horneff S et al..
Effects of the factor V G1691A mutation and the factor II G20210A variant on the clinical
expression of severe hemophilia A in children—results of a multicenter studys.
Haematologica.
2007;
92
982-985
23
Tizzano E F, Soria J M, Coll I et al..
The prothrombin 20210A allele influences clinical manifestations of hemophilia A in
patients with intron 22 inversion and without inhibitors.
Haematologica.
2002;
87
279-285
24
Ghosh K, Shetty S, Mohanty D.
Milder clinical presentation of haemophilia A with severe deficiency of factor VIII
as measured by one-stage assay.
Haemophilia.
2001;
7
9-12
25
Vianello F, Belvini D, Dal Bello F et al..
Mild bleeding diathesis in a boy with combined severe haemophilia B (C(10400)—> T)
and heterozygous factor V Leiden.
Haemophilia.
2001;
7
511-514
26
Negrier C, Berruyer M, Durin A, Philippe N, Dechavanne M.
Increased thrombin generation in a child with a combined factor IX and protein C deficiency.
Blood.
1993;
81
690-695
27
Foka Z J, Lambropoulos A F, Makris P E, Constantinidis T C, Kotsis A.
High frequency of factor V Leiden and prothrombin G20210A mutations in Greek hemophiliacs.
J Thromb Haemost.
2003;
1
1116-1117
28
Shetty S, Vora S, Kulkarni B et al..
Contribution of natural anticoagulant and fibrinolytic factors in modulating the clinical
severity of haemophilia patients.
Br J Haematol.
2007;
138
541-544
29
Kubisz P, Stasko J, Dobrotová M, Ivanková J, Mesko D.
Severe hemophilia and physiologic inhibitors of coagulation.
Clin Appl Thromb Hemost.
2005;
11
331-334
30
Arbini A A, Mannucci P M, Bauer K A.
Low prevalence of the factor V Leiden mutation among “severe” hemophiliacs with a
“milder” bleeding diathesis.
Thromb Haemost.
1995;
74
1255-1258
31
Araújo F, Fraga M, Henriques I et al..
The clinical phenotype modulation of haemophilia by prothrombotic gene mutations.
Haemophilia.
2003;
9
235-236
32
Arruda V R, Annichino-Bizzacchi J M, Antunes S V, Costa F F.
Association of severe hemophilia A and factor V Leiden: report of three cases.
Haemophilia.
1996;
2
51-53
33
Petkova R, Chakarov S, Horvath A, Ganev V, Kremensky I.
Coexistence of a common prothrombotic risk factor and hemophilia in the Bulgarian
hemophilic population: genotype/phenotype correlations.
Balkan J Med Genet.
2001;
4
37-40
34
Ar M C, Baykara O, Buyru A N, Baslar Z.
The impact of prothrombotic mutations on factor consumption in adult patients with
severe hemophilia.
Clin Appl Thromb Hemost.
2008;
, [Epub ahead of print]
35
Vezendi K, Tápai K, Erdödi E et al..
Thrombophilic markers in patients with congenital bleeding disorders.
Haematologia (Budap).
2002;
32
467-473
36
Ahmed R, Kannan M, Choudhry V P, Saxena R.
Does the MTHFR 677T allele alter the clinical phenotype in severe haemophilia A?.
Thromb Res.
2003;
109
71-72
37
Beltrán-Miranda C P, Khan A, Jaloma-Cruz A R, Laffan M A.
Thrombin generation and phenotypic correlation in haemophilia A.
Haemophilia.
2005;
11
326-334
38
van Dijk K, van der Bom J G, Fischer K, de Groot P G, van den Berg H M.
Phenotype of severe hemophilia A and plasma levels of risk factors for thrombosis.
J Thromb Haemost.
2007;
5
1062-1064
39
Schulman S, Eelde A, Holmström M, Ståhlberg G, Odeberg J, Blombäck M.
Validation of a composite score for clinical severity of hemophilia.
J Thromb Haemost.
2008;
6
1113-1121
40
Mann K G, Kalafatis M.
Factor V: a combination of Dr Jekyll and Mr Hyde.
Blood.
2003;
101
20-30
41
Bos M HA, Meijerman D W, van der Zwaan C, Mertens K.
Does activated protein C-resistant factor V contribute to thrombin generation in hemophilic
plasma?.
J Thromb Haemost.
2005;
3
522-530
42
van't Veer C, Golden N J, Kalafatis M, Simioni P, Bertina R M, Mann K G.
An in vitro analysis of the combination of hemophilia A and factor V(LEIDEN).
Blood.
1997;
90
3067-3072
43
Schlachterman A, Schuettrumpf J, Liu J H et al..
Factor V Leiden improves in vivo hemostasis in murine hemophilia models.
J Thromb Haemost.
2005;
3
2730-2737
44
Lindqvist P G, Svensson P J, Dahlbäck B, Marsál K.
Factor V Q506 mutation (activated protein C resistance) associated with reduced intrapartum
blood loss—a possible evolutionary selection mechanism.
Thromb Haemost.
1998;
79
69-73
45
Jayandharan G R, Srivastava A.
The phenotypic heterogeneity of severe hemophilia.
Semin Thromb Hemost.
2008;
34
128-141
Massimo FranchiniM.D.
Immunohematology and Transfusion Center, Department of Pathology and Laboratory Medicine
University Hospital of Parma, Via Gramsci, 14, Parma, 37124, Italy
eMail: massimo.franchini@azosp.vr.it