Abstract
Inherited severe hypoplasminogenaemia is a multisystemic disorder leading to deficient extravascular fibrinolysis. As a clinical consequence wound healing capacity of mucous membranes is markedly impaired leading to ligneous conjunctivitis and several other manifestations. Here we report the molecular genetic and clinical findings on 23 new cases with severe hypoplasminogenaemia. Homozygous or compound-heterozygous mutations in the plasminogen (PLG) gene were found in 16 of 23 patients (70%), three of which were novel mutations reported here for the first time (C166Y, Y264S, IVS10-7T/G). Compared to 79 previously published cases, clinical manifestations of the current group of patients showed higher percentages of ligneous periodontitis, congenital hydrocephalus, and involvement of the female genital tract. In contrast, involvement of the gastrointestinal or urogenital tract was not observed in any of the cases. Patients originated to a large extent (61%) from Turkey and the Middle East, and showed a comparably frequent occurrence of consanguinity of affected families and a greater female to male ratio than was derived from previous reports in the literature. Individual treatment of ligneous conjunctivitis included topical plasminogen or heparin eye drops, topical or systemic fresh frozen plasma, and surgical removal of ligneous pseudomembranes, mostly with modest or transient efficacy. In conclusion, the present study underscores the broad range of clinical manifestations in PLG-deficient patients with a trend to regional differences. Transmission of genetic and clinical data to the recently established Plasminogen Deficiency Registry should help to determine the prevalence of the disease and to develop more efficient treatment strategies.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 454-460 |
| Number of pages | 7 |
| Journal | Thrombosis and Haemostasis |
| Volume | 105 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2011 |
| Externally published | Yes |
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Keywords
- Clinical heterogeneity
- Inherited hypoplasminogenaemia
- PLG gene mutations
ASJC Scopus subject areas
- Hematology
Cite this
Identification of three novel plasminogen (PLG) gene mutations in a series of 23 patients with low PLG activity. / Klammt, Jürgen; Kobelt, Louise; Aktas, Dilek; Durak, Ismet; Gokbuget, Aslan; Hughes, Quintin; Irkec, Murat; Kurtulus, Idil; Lapi, Elisabetta; Mechoulam, Hadas; Mendoza-Londono, Roberto; Palumbo, Joseph S.; Steitzer, Hansjörg; Tabbara, Khalid F.; Ozbek, Zeynep; Pucci, Neri; Sotomayor, Talia; Sturm, Marian; Drogies, Tim; Ziegler, Maike; Schuster, Volker.
In: Thrombosis and Haemostasis, Vol. 105, No. 3, 03.2011, p. 454-460.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Identification of three novel plasminogen (PLG) gene mutations in a series of 23 patients with low PLG activity
AU - Klammt, Jürgen
AU - Kobelt, Louise
AU - Aktas, Dilek
AU - Durak, Ismet
AU - Gokbuget, Aslan
AU - Hughes, Quintin
AU - Irkec, Murat
AU - Kurtulus, Idil
AU - Lapi, Elisabetta
AU - Mechoulam, Hadas
AU - Mendoza-Londono, Roberto
AU - Palumbo, Joseph S.
AU - Steitzer, Hansjörg
AU - Tabbara, Khalid F.
AU - Ozbek, Zeynep
AU - Pucci, Neri
AU - Sotomayor, Talia
AU - Sturm, Marian
AU - Drogies, Tim
AU - Ziegler, Maike
AU - Schuster, Volker
PY - 2011/3
Y1 - 2011/3
N2 - Inherited severe hypoplasminogenaemia is a multisystemic disorder leading to deficient extravascular fibrinolysis. As a clinical consequence wound healing capacity of mucous membranes is markedly impaired leading to ligneous conjunctivitis and several other manifestations. Here we report the molecular genetic and clinical findings on 23 new cases with severe hypoplasminogenaemia. Homozygous or compound-heterozygous mutations in the plasminogen (PLG) gene were found in 16 of 23 patients (70%), three of which were novel mutations reported here for the first time (C166Y, Y264S, IVS10-7T/G). Compared to 79 previously published cases, clinical manifestations of the current group of patients showed higher percentages of ligneous periodontitis, congenital hydrocephalus, and involvement of the female genital tract. In contrast, involvement of the gastrointestinal or urogenital tract was not observed in any of the cases. Patients originated to a large extent (61%) from Turkey and the Middle East, and showed a comparably frequent occurrence of consanguinity of affected families and a greater female to male ratio than was derived from previous reports in the literature. Individual treatment of ligneous conjunctivitis included topical plasminogen or heparin eye drops, topical or systemic fresh frozen plasma, and surgical removal of ligneous pseudomembranes, mostly with modest or transient efficacy. In conclusion, the present study underscores the broad range of clinical manifestations in PLG-deficient patients with a trend to regional differences. Transmission of genetic and clinical data to the recently established Plasminogen Deficiency Registry should help to determine the prevalence of the disease and to develop more efficient treatment strategies.
AB - Inherited severe hypoplasminogenaemia is a multisystemic disorder leading to deficient extravascular fibrinolysis. As a clinical consequence wound healing capacity of mucous membranes is markedly impaired leading to ligneous conjunctivitis and several other manifestations. Here we report the molecular genetic and clinical findings on 23 new cases with severe hypoplasminogenaemia. Homozygous or compound-heterozygous mutations in the plasminogen (PLG) gene were found in 16 of 23 patients (70%), three of which were novel mutations reported here for the first time (C166Y, Y264S, IVS10-7T/G). Compared to 79 previously published cases, clinical manifestations of the current group of patients showed higher percentages of ligneous periodontitis, congenital hydrocephalus, and involvement of the female genital tract. In contrast, involvement of the gastrointestinal or urogenital tract was not observed in any of the cases. Patients originated to a large extent (61%) from Turkey and the Middle East, and showed a comparably frequent occurrence of consanguinity of affected families and a greater female to male ratio than was derived from previous reports in the literature. Individual treatment of ligneous conjunctivitis included topical plasminogen or heparin eye drops, topical or systemic fresh frozen plasma, and surgical removal of ligneous pseudomembranes, mostly with modest or transient efficacy. In conclusion, the present study underscores the broad range of clinical manifestations in PLG-deficient patients with a trend to regional differences. Transmission of genetic and clinical data to the recently established Plasminogen Deficiency Registry should help to determine the prevalence of the disease and to develop more efficient treatment strategies.
KW - Clinical heterogeneity
KW - Inherited hypoplasminogenaemia
KW - PLG gene mutations
UR - http://www.scopus.com/inward/record.url?scp=79952498449&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952498449&partnerID=8YFLogxK
U2 - 10.1160/TH10-04-0216
DO - 10.1160/TH10-04-0216
M3 - Article
C2 - 21174000
AN - SCOPUS:79952498449
VL - 105
SP - 454
EP - 460
JO - Thrombosis and Haemostasis
JF - Thrombosis and Haemostasis
SN - 0340-6245
IS - 3
ER -