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Free DNA and Nucleosome Concentrations in Pathological Pregnancies

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT01736826
Recruitment Status : Active, not recruiting
First Posted : November 29, 2012
Last Update Posted : January 26, 2018
Sponsor:
Information provided by (Responsible Party):
Centre Hospitalier Universitaire de Nīmes

Brief Summary:

The primary objective of this study is to demonstrate that plasma concentrations of nucleosomes and free DNA differ between three groups:

  1. pregnant patients with complications typical of placental insufficiency or venous thrombosis (group P),
  2. healthy women (Group T1) and
  3. healthy pregnant women (Group T2).

Condition or disease Intervention/treatment
Pregnancy Venous Thrombosis Pulmonary Embolism Hypertension, Pregnancy-Induced Eclampsia HELLP Syndrome Pre-Eclampsia Fetal Death Placental Insufficiency Biological: Bloodwork, baseline Biological: Blood work, Months 1 & 2 Biological: Bloodwork, Months -1 to -6

Detailed Description:

Our secondary objectives include the following:

  1. To describe, in 15 healthy, non-pregnant women changes in plasma concentrations of nucleosomes and free DNA over 3 months.
  2. To describe, in 15 pregnant women (without complications), changes in plasma concentrations of nucleosomes and free DNA over the last 7 months of pregnancy
  3. To show that plasma concentrations of nucleosomes and free DNA, in patients with complicated pregnancies differ according to the nature of the complication
  4. To show that a relationship exists between the concentrations of nucleosomes, free DNA, and total granulocyte microparticles (and trophoblast particles for pregnant women)
  5. To evaluate the relationship between nucleosome concentrations, free DNA concentrations and circulating leukocyte populations
  6. To evaluate the relationship between nucleosome concentrations, free DNA concentrations and hemostasis markers
  7. To describe changes in hemostasis markers throughout pregnancy
  8. To evaluate the relationship between nucleosome concentrations, free DNA concentrations and the angiogenic marker CD146
  9. To add to the Nîmes University Hospital biological collections.

Study Type : Observational
Estimated Enrollment : 180 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Comparative Study of Plasma Free DNA and Nucleosome Concentrations: Pathological Versus Normal Pregnancies
Study Start Date : June 2015
Estimated Primary Completion Date : July 2018
Estimated Study Completion Date : December 2018


Group/Cohort Intervention/treatment
Group P: pregnancy w/complications

The patient is pregnant and has complications typical of placental vascular disease (preeclampsia, eclampsia, HELLP syndrome, retro-placental hematoma, in utero fetal death) or venous thromboembolism (deep vein thrombosis, pulmonary embolism).

100 patients will be included.

Interventions to be administered: Bloodwork, baseline

Biological: Bloodwork, baseline
36 ml of blood are drawn at baseline (last month of pregnancy for groups P and T2, inclusion for group T1) in order to quantify the following: plasma free DNA concentration, plasma nucleosome concentration, hemoglobin, platelets, leukocytes, polynuclear neutrophils, mean corpuscular volume, monocytes, mean corpuscular hemoglobin, lymphocytes, polynuclear eosinophils, polynuclear basophils, D-Dimers, Fibrin monomers, Trophoblast microparticles, Angiogenic marker CD146.

Group T1: Healthy volunteers

Healthy volunteers with no history of chronic or neoplastic disease.

30 healthy volunteers will be included.

Interventions to be administered: Bloodwork, baseline

Biological: Bloodwork, baseline
36 ml of blood are drawn at baseline (last month of pregnancy for groups P and T2, inclusion for group T1) in order to quantify the following: plasma free DNA concentration, plasma nucleosome concentration, hemoglobin, platelets, leukocytes, polynuclear neutrophils, mean corpuscular volume, monocytes, mean corpuscular hemoglobin, lymphocytes, polynuclear eosinophils, polynuclear basophils, D-Dimers, Fibrin monomers, Trophoblast microparticles, Angiogenic marker CD146.

Group T2: Pregnancy, no complications

Pregnant patients with no identifiable pregnancy complications, and no history of chronic or neoplastic disease.

50 pregnant volunteers will be included.

Interventions to be administered: Bloodwork, baseline

Biological: Bloodwork, baseline
36 ml of blood are drawn at baseline (last month of pregnancy for groups P and T2, inclusion for group T1) in order to quantify the following: plasma free DNA concentration, plasma nucleosome concentration, hemoglobin, platelets, leukocytes, polynuclear neutrophils, mean corpuscular volume, monocytes, mean corpuscular hemoglobin, lymphocytes, polynuclear eosinophils, polynuclear basophils, D-Dimers, Fibrin monomers, Trophoblast microparticles, Angiogenic marker CD146.

Group T1x: 15 Healthy volunteers

15 Healthy volunteers selected from group T1 (the first 15). These patients will have 2 additional months of follow up.

Interventions to be administered: Blood work, Months 1 & 2

Biological: Bloodwork, baseline
36 ml of blood are drawn at baseline (last month of pregnancy for groups P and T2, inclusion for group T1) in order to quantify the following: plasma free DNA concentration, plasma nucleosome concentration, hemoglobin, platelets, leukocytes, polynuclear neutrophils, mean corpuscular volume, monocytes, mean corpuscular hemoglobin, lymphocytes, polynuclear eosinophils, polynuclear basophils, D-Dimers, Fibrin monomers, Trophoblast microparticles, Angiogenic marker CD146.

Biological: Blood work, Months 1 & 2
36 ml of blood are drawn at 1 & 2 months after inclusion in order to quantify the following: plasma free DNA concentration, plasma nucleosome concentration, hemoglobin, platelets, leukocytes, polynuclear neutrophils, mean corpuscular volume, monocytes, mean corpuscular hemoglobin, lymphocytes, polynuclear eosinophils, polynuclear basophils, D-Dimers, Fibrin monomers, Trophoblast microparticles, Angiogenic marker CD146.

Group T2x: 15 Pregnancy, no complications

15 patients selected from group T2 (the first 15); these patients will have 7 months of follow up during pregnancy.

Interventions to be administered: Bloodwork, Months -1 to -6

Biological: Bloodwork, baseline
36 ml of blood are drawn at baseline (last month of pregnancy for groups P and T2, inclusion for group T1) in order to quantify the following: plasma free DNA concentration, plasma nucleosome concentration, hemoglobin, platelets, leukocytes, polynuclear neutrophils, mean corpuscular volume, monocytes, mean corpuscular hemoglobin, lymphocytes, polynuclear eosinophils, polynuclear basophils, D-Dimers, Fibrin monomers, Trophoblast microparticles, Angiogenic marker CD146.

Biological: Bloodwork, Months -1 to -6
36 ml of blood are drawn at the third, fourth, fifth, sixth, seventh and eight months of normal pregnancy (corresponding to months -1 to -6 before comparative baseline; this group is included in the study early during pregnancy)in order to quantify the following: plasma free DNA concentration, plasma nucleosome concentration, hemoglobin, platelets, leukocytes, polynuclear neutrophils, mean corpuscular volume, monocytes, mean corpuscular hemoglobin, lymphocytes, polynuclear eosinophils, polynuclear basophils, D-Dimers, Fibrin monomers, Trophoblast microparticles, Angiogenic marker CD146.




Primary Outcome Measures :
  1. Total plasma concentration of free DNA (ng/ml) [ Time Frame: Base line (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  2. Total plasma concentration of nucleosomes (AU) [ Time Frame: Base line (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth


Secondary Outcome Measures :
  1. Hemoglobin (g/l) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  2. Platelets (g/l) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  3. Leukocytes (g/l) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  4. Polynuclear neutrophils(g/l) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  5. Mean corpuscular volume (fL) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  6. Monocytes (g/l) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  7. Mean corpuscular hemoglobin (pg/GR) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  8. Lymphocytes (g/l) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  9. Polynuclear eosinophils (g/l) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  10. Polynuclear basophils (g/l) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  11. D-dimers (ng/ml) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  12. Fibrin monomers (ng/ml) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  13. Trophoblast microparticles (%) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  14. Angiogenic marker CD146 (ng/ml) [ Time Frame: baseline (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  15. Hemoglobin (g/l) [ Time Frame: 1 month ]
    For group T1x only

  16. Platelets (g/l) [ Time Frame: 1 month ]
    For group T1x only

  17. Leukocytes (g/l) [ Time Frame: 1 month ]
    For group T1x only

  18. Polynuclear neutrophils(g/l) [ Time Frame: 1 month ]
    For group T1x only

  19. Mean corpuscular volume (fL) [ Time Frame: 1 month ]
    For group T1x only

  20. Monocytes (g/l) [ Time Frame: 1 month ]
    For group T1x only

  21. Mean corpuscular hemoglobin (pg/GR) [ Time Frame: 1 month ]
    For group T1x only

  22. Lymphocytes (g/l) [ Time Frame: 1 month ]
    For group T1x only

  23. Polynuclear eosinophils (g/l) [ Time Frame: 1 month ]
    For group T1x only

  24. Polynuclear basophils (g/l) [ Time Frame: 1 month ]
    For group T1x only

  25. D-dimers (ng/ml) [ Time Frame: 1 month ]
    For group T1x only

  26. Fibrin monomers (ng/ml) [ Time Frame: 1 month ]
    For group T1x only

  27. Trophoblast microparticles (%) [ Time Frame: 1 month ]
    For group T1x only

  28. Angiogenic marker CD146 (ng/ml) [ Time Frame: 1 month ]
    For group T1x only

  29. Total plasma concentration of free DNA (ng/ml) [ Time Frame: 1 month ]
    For group T1x only

  30. Total plasma concentration of nucleosomes (AU) [ Time Frame: 1 month ]
    For group T1x only

  31. Hemoglobin (g/l) [ Time Frame: 2 months ]
    For group T1x only

  32. Platelets (g/l) [ Time Frame: 2 months ]
    For group T1x only

  33. Leukocytes (g/l) [ Time Frame: 2 months ]
    For group T1x only

  34. Polynuclear neutrophils(g/l) [ Time Frame: 2 months ]
    For group T1x only

  35. Mean corpuscular volume (fL) [ Time Frame: 2 months ]
    For group T1x only

  36. Monocytes (g/l) [ Time Frame: 2 months ]
    For group T1x only

  37. Mean corpuscular hemoglobin (pg/GR) [ Time Frame: 2 months ]
    For group T1x only

  38. Lymphocytes (g/l) [ Time Frame: 2 months ]
    For group T1x only

  39. Polynuclear eosinophils (g/l) [ Time Frame: 2 months ]
    For group T1x only

  40. Polynuclear basophils (g/l) [ Time Frame: 2 months ]
    For group T1x only

  41. D-dimers (ng/ml) [ Time Frame: 2 months ]
    For group T1x only

  42. Fibrin monomers (ng/ml) [ Time Frame: 2 months ]
    For group T1x only

  43. Trophoblast microparticles (%) [ Time Frame: 2 months ]
    For group T1x only

  44. Angiogenic marker CD146 (ng/ml) [ Time Frame: 2 months ]
    For group T1x only

  45. Total plasma concentration of free DNA (ng/ml) [ Time Frame: 2 months ]
    For group T1x only

  46. Total plasma concentration of nucleosomes (AU) [ Time Frame: 2 months ]
    For group T1x only

  47. Hemoglobin (g/l) [ Time Frame: -1 months ]
    For group T2x only

  48. Hemoglobin (g/l) [ Time Frame: -2 months ]
    For group T2x only

  49. Hemoglobin (g/l) [ Time Frame: -3 months ]
    For group T2x only

  50. Hemoglobin (g/l) [ Time Frame: -4 months ]
    For group T2x only

  51. Hemoglobin (g/l) [ Time Frame: -5 months ]
    For group T2x only

  52. Hemoglobin (g/l) [ Time Frame: -6 months ]
    For group T2x only

  53. Platelets (g/l) [ Time Frame: -1 months ]
    For group T2x only

  54. Platelets (g/l) [ Time Frame: -2 months ]
    For group T2x only

  55. Platelets (g/l) [ Time Frame: -3 months ]
    For group T2x only

  56. Platelets (g/l) [ Time Frame: -4 months ]
    For group T2x only

  57. Platelets (g/l) [ Time Frame: -5 months ]
    For group T2x only

  58. Platelets (g/l) [ Time Frame: -6 months ]
    For group T2x only

  59. Leukocytes (g/l) [ Time Frame: -1 months ]
    For group T2x only

  60. Leukocytes (g/l) [ Time Frame: -2 months ]
    For group T2x only

  61. Leukocytes (g/l) [ Time Frame: -3 months ]
    For group T2x only

  62. Leukocytes (g/l) [ Time Frame: -4 months ]
    For group T2x only

  63. Leukocytes (g/l) [ Time Frame: -5 months ]
    For group T2x only

  64. Leukocytes (g/l) [ Time Frame: -6 months ]
    For group T2x only

  65. Polynuclear neutrophils(g/l) [ Time Frame: -1 months ]
    For group T2x only

  66. Polynuclear neutrophils(g/l) [ Time Frame: -2 months ]
    For group T2x only

  67. Polynuclear neutrophils(g/l) [ Time Frame: -3 months ]
    For group T2x only

  68. Polynuclear neutrophils(g/l) [ Time Frame: -4 months ]
    For group T2x only

  69. Polynuclear neutrophils(g/l) [ Time Frame: -5 months ]
    For group T2x only

  70. Polynuclear neutrophils(g/l) [ Time Frame: -6 months ]
    For group T2x only

  71. Mean corpuscular volume (fL) [ Time Frame: -1 months ]
    For group T2x only

  72. Mean corpuscular volume (fL) [ Time Frame: -2 months ]
    For group T2x only

  73. Mean corpuscular volume (fL) [ Time Frame: -3 months ]
    For group T2x only

  74. Mean corpuscular volume (fL) [ Time Frame: -4 months ]
    For group T2x only

  75. Mean corpuscular volume (fL) [ Time Frame: -5 months ]
    For group T2x only

  76. Mean corpuscular volume (fL) [ Time Frame: -6 months ]
    For group T2x only

  77. Monocytes (g/l) [ Time Frame: -1 months ]
    For group T2x only.

  78. Monocytes (g/l) [ Time Frame: -2 months ]
    For group T2x only.

  79. Monocytes (g/l) [ Time Frame: -3 months ]
    For group T2x only.

  80. Monocytes (g/l) [ Time Frame: -4 months ]
    For group T2x only.

  81. Monocytes (g/l) [ Time Frame: -5 months ]
    For group T2x only.

  82. Monocytes (g/l) [ Time Frame: -6 months ]
    For group T2x only.

  83. Mean corpuscular hemoglobin (pg/GR) [ Time Frame: -1 months ]
    For group T2x only.

  84. Mean corpuscular hemoglobin (pg/GR) [ Time Frame: -2 months ]
    For group T2x only.

  85. Mean corpuscular hemoglobin (pg/GR) [ Time Frame: -3 months ]
    For group T2x only.

  86. Mean corpuscular hemoglobin (pg/GR) [ Time Frame: -4 months ]
    For group T2x only.

  87. Mean corpuscular hemoglobin (pg/GR) [ Time Frame: -5 months ]
    For group T2x only.

  88. Mean corpuscular hemoglobin (pg/GR) [ Time Frame: -6 months ]
    For group T2x only.

  89. Lymphocytes (g/l) [ Time Frame: -1 months ]
    For group T2x only.

  90. Lymphocytes (g/l) [ Time Frame: -2 months ]
    For group T2x only.

  91. Lymphocytes (g/l) [ Time Frame: -3 months ]
    For group T2x only.

  92. Lymphocytes (g/l) [ Time Frame: -4 months ]
    For group T2x only.

  93. Lymphocytes (g/l) [ Time Frame: -5 months ]
    For group T2x only.

  94. Lymphocytes (g/l) [ Time Frame: -6 months ]
    For group T2x only.

  95. Polynuclear eosinophils (g/l) [ Time Frame: -1 months ]
    For group T2x only.

  96. Polynuclear eosinophils (g/l) [ Time Frame: -2 months ]
    For group T2x only.

  97. Polynuclear eosinophils (g/l) [ Time Frame: -3 months ]
    For group T2x only.

  98. Polynuclear eosinophils (g/l) [ Time Frame: -4 months ]
    For group T2x only.

  99. Polynuclear eosinophils (g/l) [ Time Frame: -5 months ]
    For group T2x only.

  100. Polynuclear eosinophils (g/l) [ Time Frame: -6 months ]
    For group T2x only.

  101. Polynuclear basophils (g/l) [ Time Frame: -1 months ]
    For group T2x only.

  102. Polynuclear basophils (g/l) [ Time Frame: -2 months ]
    For group T2x only.

  103. Polynuclear basophils (g/l) [ Time Frame: -3 months ]
    For group T2x only.

  104. Polynuclear basophils (g/l) [ Time Frame: -4 months ]
    For group T2x only.

  105. Polynuclear basophils (g/l) [ Time Frame: -5 months ]
    For group T2x only.

  106. Polynuclear basophils (g/l) [ Time Frame: -6 months ]
    For group T2x only.

  107. D-dimers (ng/ml) [ Time Frame: -1 months ]
    For group T2x only.

  108. D-dimers (ng/ml) [ Time Frame: -2 months ]
    For group T2x only.

  109. D-dimers (ng/ml) [ Time Frame: -3 months ]
    For group T2x only.

  110. D-dimers (ng/ml) [ Time Frame: -4 months ]
    For group T2x only.

  111. D-dimers (ng/ml) [ Time Frame: -5 months ]
    For group T2x only.

  112. D-dimers (ng/ml) [ Time Frame: -6 months ]
    For group T2x only.

  113. Fibrin monomers (ng/ml) [ Time Frame: -1 months ]
    For group T2x only.

  114. Fibrin monomers (ng/ml) [ Time Frame: -2 months ]
    For group T2x only.

  115. Fibrin monomers (ng/ml) [ Time Frame: -3 months ]
    For group T2x only.

  116. Fibrin monomers (ng/ml) [ Time Frame: -4 months ]
    For group T2x only.

  117. Fibrin monomers (ng/ml) [ Time Frame: -5 months ]
    For group T2x only.

  118. Fibrin monomers (ng/ml) [ Time Frame: -6 months ]
    For group T2x only.

  119. Trophoblast microparticles (%) [ Time Frame: -1 months ]
    For group T2x only.

  120. Trophoblast microparticles (%) [ Time Frame: -2 months ]
    For group T2x only.

  121. Trophoblast microparticles (%) [ Time Frame: -3 months ]
    For group T2x only.

  122. Trophoblast microparticles (%) [ Time Frame: -4 months ]
    For group T2x only.

  123. Trophoblast microparticles (%) [ Time Frame: -5 months ]
    For group T2x only.

  124. Trophoblast microparticles (%) [ Time Frame: -6 months ]
    For group T2x only.

  125. Angiogenic marker CD146 (ng/ml) [ Time Frame: -1 months ]
    For group T2x only.

  126. Angiogenic marker CD146 (ng/ml) [ Time Frame: -2 months ]
    For group T2x only.

  127. Angiogenic marker CD146 (ng/ml) [ Time Frame: -3 months ]
    For group T2x only.

  128. Angiogenic marker CD146 (ng/ml) [ Time Frame: -4 months ]
    For group T2x only.

  129. Angiogenic marker CD146 (ng/ml) [ Time Frame: -5 months ]
    For group T2x only.

  130. Angiogenic marker CD146 (ng/ml) [ Time Frame: -6 months ]
    For group T2x only.

  131. Total plasma concentration of nucleosomes (AU) [ Time Frame: -1 months ]
    For group T2x only.

  132. Total plasma concentration of nucleosomes (AU) [ Time Frame: -2 months ]
    For group T2x only.

  133. Total plasma concentration of nucleosomes (AU) [ Time Frame: -3 months ]
    For group T2x only.

  134. Total plasma concentration of nucleosomes (AU) [ Time Frame: -4 months ]
    For group T2x only.

  135. Total plasma concentration of nucleosomes (AU) [ Time Frame: -5 months ]
    For group T2x only.

  136. Total plasma concentration of nucleosomes (AU) [ Time Frame: -6 months ]
    For group T2x only.

  137. Total plasma concentration of free DNA (ng/ml) [ Time Frame: -1 months ]
    For group T2x only.

  138. Total plasma concentration of free DNA (ng/ml) [ Time Frame: -2 months ]
    For group T2x only.

  139. Total plasma concentration of free DNA (ng/ml) [ Time Frame: -3 months ]
    For group T2x only.

  140. Total plasma concentration of free DNA (ng/ml) [ Time Frame: -4 months ]
    For group T2x only.

  141. Total plasma concentration of free DNA (ng/ml) [ Time Frame: -5 months ]
    For group T2x only.

  142. Total plasma concentration of free DNA (ng/ml) [ Time Frame: -6 months ]
    For group T2x only.

  143. Fibrinogen (g/l) [ Time Frame: Base line (day 0) ]
    For group P, baseline occurs within the 30 days preceding birth. For group T1, baseline = time of inclusion. For group T2, baseline occurs within the 30 days preceding birth.

  144. Fibrinogen (g/l) [ Time Frame: -1 months ]
    For group T2x only.

  145. Fibrinogen (g/l) [ Time Frame: -2 months ]
    For group T2x only.

  146. Fibrinogen (g/l) [ Time Frame: -3 months ]
    For group T2x only.

  147. Fibrinogen (g/l) [ Time Frame: -4 months ]
    For group T2x only.

  148. Fibrinogen (g/l) [ Time Frame: -5 months ]
    For group T2x only.

  149. Fibrinogen (g/l) [ Time Frame: -6 months ]
    For group T2x only.


Biospecimen Retention:   Samples Without DNA

At each visit a total of 36 ml of blood will be drawn (5 x EDTA tube = 5 x 4.5ml; 2 x CTAD tube = 2 x 4.5 ml and 1 dry tube = 4.5 ml).

Tubes will be rapidly conditioned and samples stored at -80°C. After analysis, remaining samples will be stored in the Nîmes University Hospital Biological Collections.



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population

The study population includes three groups:

Group P: 100 pregnant women with complications typical of placental vascular disease or venous thromboembolism.

Group T1: 30 non-pregnant, healthy volunteers

  • The first 15 patients from group T1 will form group T1x. The latter group has two months of additional follow up.

Group T2: 50 pregnant, healthy volunteers

  • The first 15 patients from group T2 will form group T2x. The latter group has 7 months of follow-up during pregnancy.
Criteria

Inclusion Criteria for all patients:

  • The patient must have given her informed and signed consent
  • The patient must be insured or beneficiary of a health insurance plan

Inclusion Criteria for patients in group P:

  • The patient is pregnant and has complications typical of placental vascular disease (preeclampsia, eclampsia, HELLP syndrome, retro-placental hematoma, in utero fetal death) or venous thromboembolism (deep vein thrombosis, pulmonary embolism)

Inclusion Criteria for patients in group T1:

  • The patient is available for 3 months of follow-up
  • The patient is a non-pregnant healthy volunteer
  • No identifiable chronic pathologies
  • No history of neoplastic disease
  • No history of chronic infectious disease
  • No acute disease (such as benign infection), now or within the past two weeks

Inclusion Criteria for patients in group T2:

  • The patient is available for 7 months of follow-up
  • The patient is pregnant, with no identifiable pregnancy complications
  • No identifiable chronic pathologies
  • No history of neoplastic disease
  • No history of chronic infectious disease
  • No acute disease (such as benign infection), now or within the past two weeks

Exclusion Criteria for all patients:

  • The patient is participating in another study (with the exception of the following studies: PAPILLO-PMA (2013-A00538-37), ElastoMAP (2013-A01148-37), ElastoDéclenche (2014-A00828-39), LXRs (2009-A00968-49), Bakri (2013-A00914-41), OASIS 2 (2013-A00022-43)).
  • The patient is in an exclusion period determined by a previous study
  • The patient is under judicial protection, under tutorship or curatorship
  • The patient refuses to sign the consent
  • It is impossible to correctly inform the patient
  • The patient cannot read French
  • The patient is receiving hormonal ovarian stimulation in the context of medically assisted procreation
  • Impossible to perform venipuncture under good conditions
  • New complication or pathology during the study (except for pregnancy complications in group P)

Exclusion Criteria for group P:

  • Twin or multiple pregnancy
  • The patient is participating in another study (with the exception of those mentioned in the exclusion criteria for all patients and the DG Postpartum study (2013-A00277-38)

Exclusion Criteria for group T1:

  • The patient is pregnant
  • The patient is breast feeding
  • The patient has given birth within the last 3 months
  • Known history of chronic disease
  • History of treated neoplastic disease
  • Acute disease within the past two weeks (includes benign disease)

Exclusion Criteria for group T2:

  • Pregnancy with complications
  • Known history of chronic disease
  • History of treated neoplastic disease
  • Acute disease within the past two weeks (includes benign disease)
  • Twin or multiple pregnancy

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01736826


Locations
France
CHU de Nîmes - Hôpital Universitaire Carémeau
Nîmes Cedex 9, France, 30029
Sponsors and Collaborators
Centre Hospitalier Universitaire de Nīmes
Investigators
Study Director: Sylvie Bouvier, MD Centre Hospitalier Universitaire de Nîmes
Principal Investigator: Eve Mousty, MD Centre Hospitalier Universitaire de Nîmes

Responsible Party: Centre Hospitalier Universitaire de Nīmes
ClinicalTrials.gov Identifier: NCT01736826     History of Changes
Other Study ID Numbers: LOCAL/2012/SB-01
2014-A01120-47 ( Other Identifier: RCB number )
First Posted: November 29, 2012    Key Record Dates
Last Update Posted: January 26, 2018
Last Verified: January 2018

Keywords provided by Centre Hospitalier Universitaire de Nīmes:
plasma nucleosome concentration
plasma free DNA concentration

Additional relevant MeSH terms:
Thrombosis
Embolism
Pulmonary Embolism
Venous Thrombosis
Eclampsia
Pre-Eclampsia
Fetal Death
HELLP Syndrome
Hypertension, Pregnancy-Induced
Placental Insufficiency
Embolism and Thrombosis
Vascular Diseases
Cardiovascular Diseases
Lung Diseases
Respiratory Tract Diseases
Pregnancy Complications
Death
Pathologic Processes
Hypertension
Placenta Diseases