INTRODUCTION: Immune thrombocytopenia (ITP) is the most common cause of acquired bleeding in childhood, but little is known about the clinical course and outcomes in infants with ITP. METHODS: This is a retrospective study of all infants (1-12 months of age) and toddlers (13-47 months of age) diagnosed with ITP from a single centre during a 13-year period. The following data were compared between the two patients groups: demographics, severity of bleeding, platelet counts, duration of illness, development of chronic ITP, treatment and association with recent vaccination. RESULTS: Twenty-two infants and 30 toddlers were diagnosed and followed up for ITP during the study period. Infants with ITP generally had minor or mild bleeding (19, 86.4%) and seldom required treatment (7, 31.8%), and their thrombocytopenia resolved at a mean of 1.90 months after diagnosis. Besides age, the sex ratio, severity of bleeding, platelet counts and proportion that required treatment were comparable between infants and toddlers. Fewer infants developed chronic ITP (1/22 vs. 9/30, P = 0.032), but more infants had a history of vaccination in the preceding 6 weeks prior to diagnosis of ITP (13/22 vs. 1/30, P < 0.001). CONCLUSION ITP in infants is almost always a self-limiting and transient illness, and the majority of cases do not require treatment.
Humans ; Retrospective Studies ; Infant ; Male ; Purpura, Thrombocytopenic, Idiopathic/complications* ; Female ; Child, Preschool ; Platelet Count ; Hemorrhage

OBJECTIVES: To investigate the causal relationship between Helicobacter pylori (Hp) infection and immune thrombocytopenia (ITP) using Mendelian randomization (MR), as well as the association between Hp infection and chronic ITP (cITP) through a clinical study. METHODS: The datasets from genome-wide association studies were used to select the single nucleotide polymorphism loci significantly associated with Hp infection as genetic instrumental variables. The MR analysis model was used to investigate the causal relationship between ITP and Hp infection. A retrospective analysis was conducted on the medical data of 316 children with newly diagnosed ITP at the First Affiliated Hospital of Xinjiang Medical University from January 2020 to December 2023. The children were followed up for 1 year, and a multivariate logistic regression analysis was used to investigate the risk factors for cITP. RESULTS: The inverse variance weighted analysis revealed that Hp infection was significantly associated with an increased risk of ITP (OR=1.280, 95%CI: 1.098-1.492, P=0.002). There was no heterogeneity or pleiotropy in this MR study (P>0.05), and the model was stable. The "leave-one-out" sensitivity analysis verified the reliability of the results. The multivariate logistic regression analysis demonstrated that Hp infection was an independent risk factor for progression to cITP (OR=7.916, 95%CI: 3.327-18.832, P<0.001). CONCLUSIONS Hp infection is a risk factor for the onset of ITP and is an independent risk factor for cITP in children.
Humans ; Helicobacter Infections/complications* ; Purpura, Thrombocytopenic, Idiopathic/etiology* ; Child ; Male ; Female ; Helicobacter pylori ; Prognosis ; Child, Preschool ; Logistic Models ; Retrospective Studies ; Risk Factors ; Polymorphism, Single Nucleotide ; Adolescent ; Infant

SARS-CoV-2-induced immune thrombocytopenia (SARS-CoV-2-induced ITP) is an autoimmune disease secondary to virus infections. Its diagnosis is often based on exclusion of other possible causes of thrombocytopenia in COVID-19 patients. Common laboratory examinations include coagulation function, thrombopoietin and drug-dependent antibodies. Since both bleeding and thrombosis risks are seen in SARS-CoV-2-induced ITP patients, individual remedy is essential for the treatment of this disease. Because thrombopoietin receptor agonist(TPO-RA) has the side effect of accelerating thrombosis and may aggravate the pulmonary embolism symptoms of patients, it should be used for refractory SARS-CoV-2-induced ITP patients only. This review briefly summarizes the recent research progress in the pathogenesis, diagnosis and treatment of SARS-CoV-2-induced ITP.
Humans ; Purpura, Thrombocytopenic, Idiopathic/drug therapy* ; SARS-CoV-2 ; COVID-19/complications* ; Thrombocytopenia ; Thrombosis/drug therapy* ; Thrombopoietin/therapeutic use* ; Recombinant Fusion Proteins/therapeutic use*

OBJECTIVE: To investigate the causes, treatment options and outcomes of immune thrombocytopenia (ITP) patients with splanchnic venous thrombosis (SVT). METHODS: The clinical diagnosis, treatment and outcomes data of one 26-year-old male ITP patient with SVT as initial manifestation were collected. The possible causes and treatment options of the patients were discussed through literatures review. RESULTS: The result of blood routine tests of the patient showed that Plt（17-38）×10 CONCLUSION ITP combined with large scale of SVT is rare, and it is difficult to cure. It should be pay more attention to the possible thrombosis risk triggered by a transiently increased EOS in the blood stream. Promptly etiological treatment and the balance between anticoagulant therapy and bleeding risks should be taken in clinical practice.
Aged, 80 and over ; Anticoagulants/therapeutic use* ; Heparin, Low-Molecular-Weight ; Humans ; Male ; Purpura, Thrombocytopenic, Idiopathic/complications* ; Splanchnic Circulation ; Venous Thrombosis

Chronic lymphocytic leukemia (CLL) patients usually show immune dysfunction, which often leads to autoimmune hemocytopenia. Immune thrombocytopenia (ITP) is one of the common complications. The pathogenesis of CLL-related ITP is complex and has not been fully elucidated. At present, the researches mainly focus on humoral immunity, cellular immunity and innate immune disorders. Recent studies suggest that genomic abnormalities and microRNAs are also involved in CLL-related ITP. Traditional ITP standard therapy has a poor effect on CLL-related ITP. Chemotherapy or monoclonal antibody therapy against the primary pathogenesis of CLL can effectively treat thrombocytopenia, and the emergence of new targeted drugs also provides new treatment options for the disease. In this paper, the progresses of CLL-related ITP pathogenesis, prognosis and treatment in recent years are reviewed.
Antibodies, Monoclonal ; Humans ; Leukemia, Lymphocytic, Chronic, B-Cell/complications* ; MicroRNAs ; Purpura, Thrombocytopenic, Idiopathic ; Thrombocytopenia

Female ; Humans ; Pregnancy ; Pregnancy Complications, Hematologic ; Purpura, Thrombocytopenic, Idiopathic

Objective To investigate the clinical features of patients with Castleman's disease (CD) and systemic lupus erythematosus (SLE). Methods According to the diagnostic information between 1994 to 2014 extracted from the database of the Medical Record Department of Peking Union Medical College Hospital (PUMCH),patients with CD and SLE were included. A thorough literature review utilizing the key words of "Castleman's disease","systemic lupus erythematosus","SLE",and "lupus" was performed in PubMed during the same period. Cases with detailed clinical information were included while cases without detailed information were excluded from the analysis of this study. Results Nine patients worldwide were available for analysis [2 cases from PUMCH,accounted for 0.03%(2/6502) of all patients diagnosed as SLE and 1.0% (2/100) of patients diagnosed as CD during the same period] with a male-to-female ratio of2:7. The median age at diagnosis of CD was 39.0 years (range:21- 60 years). All patients were diagnosed as multicentric CD with generalized peripheral lymphadenopathy. Pathologic examination showed a balanced distribution:plasma cell variant:hyaline-vascular variant:mixed variant=3:3:3. Fever was the most common symptom (88.9%,8/9). Blood system was the most commonly involved system (88.9%,8/9) and kidneys were the most commonly involved organ (88.9%,8/9). Autoimmune thrombocytopenia (AITP) was observed in 55.6% (5/9) of patients,which was significantly higher than the general SLE patients (15.0%) (P<0.01). None of the 9 patients had evidence of central nervous system involvement. Conclusions CD complicated by SLE is a rare clinical condition. Compared to the general SLE population,this subgroup of patients may have higher rate of AITP and lower rate of central nervous system involvement.
Adult ; Castleman Disease ; complications ; physiopathology ; Female ; Humans ; Lupus Erythematosus, Systemic ; complications ; Lymphatic Diseases ; complications ; Male ; Middle Aged ; Purpura, Thrombocytopenic, Idiopathic ; complications ; Young Adult

Adult ; Antirheumatic Agents ; therapeutic use ; Castleman Disease ; drug therapy ; etiology ; Humans ; Lupus Erythematosus, Systemic ; complications ; drug therapy ; Male ; Purpura, Thrombocytopenic, Idiopathic ; complications ; drug therapy ; Rituximab ; therapeutic use ; Treatment Outcome

OBJECTIVETo explore the clinical value of immature platelet fraction (IPF), absolute immature platelet fraction (A- IPF) and thrombelastograph (TEG) on assessment of bleeding risk of immune thrombocytopenia (ITP).

METHODStwo hundred and seventy- one patients with ITP were assessed based on ITP-BAT bleeding grading system. IPF, A-IPF were determined in 271 patients ,TEG in 125 patients. The correlations between bleeding grades and IPF, A-IPF, variables of TEG in subgroups were analyzed by statistical method. The predictive value of IPF, A-IPF, and variables of TEG on bleeding risk of ITP patients was evaluated.

RESULTSThere were no significant differences in bleeding degree in all patients with different gender and disease stage (P>0.05). Mild bleeding rate in children was higher than that in adult (P<0.05). PLT inversely correlated with bleeding grade for the entire cohort (P<0.001). In all subjects, PLT< 30 × 10⁹/L and pediatric cohorts with PLT< 30 × 10⁹/L, PLT were negatively correlated with IPF (P<0.05), positive correlated with A-IPF (P<0.001) and the maximum amplitude (MA (P<0.05). Bleeding grades were significantly correlated with IPF, A-IPF, MA in all subjects and patients with PLT< 30 × 10⁹/L (P<0.001). IPF, A-IPF and MA did not correlate with bleeding grades in children with PLT< 30 × 10⁹/L (P>0.05). ROC curve analysis revealed IPF, A-IPF and MA had better predictive value (AUC 0.745, 0.744, 0.813, P<0.001). Multivariate analysis showed that IPF and MA were independence factors for predicting bleeding risk in ITP patients and comprehensive predictive value was higher (AUC 0.846, P<0.001) than single variable.

CONCLUSIONIPF, A-IPF and MA could accurately evaluate bleeding risk in ITP patients. It may be considered as reference index of the treatment and observation index of curative effect.

Adult ; Blood Platelets ; Child ; Hemorrhage ; etiology ; physiopathology ; Humans ; Multivariate Analysis ; Platelet Count ; Purpura, Thrombocytopenic, Idiopathic ; complications ; physiopathology ; ROC Curve

OBJECTIVETo study the role of Helicobacter pylori (H. pylori) infection in newly diagnosed childhood immune thrombocytopenia (ITP).

METHODSA total of 495 children with newly diagnosed ITP who were hospitalized for the first time between January 2011 and December 2013 were included as the case group. A total of 123 children with common respiratory tract infection (not ITP or other diseases of blood system) were randomly selected as the control group. All patients were divided into four groups by age: <1 year group, 1-3 years group, 3-7 years group, and 7-14 years group. The incidence of H. pylori infection in all age groups and the clinical outcomes of ITP children with or without H. pylori infection were retrospectively analyzed.

RESULTSThe incidence rate of H. pylori infection in the case group increased with increasing age. There was no significant difference in the incidence rate of H. pylori infection between the case and the control groups among subjects of the same age (P>0.05). All the ITP patients were not given anti-H. pylori treatment and only received the treatment (glucocorticoid and/or immunoglobulin) for ITP, and their remission rate declined with increasing age. There was no significant difference in the remission rate between the ITP children with H. pylori infection and those without H. pylori infection in the same age group (P>0.05).

CONCLUSIONSH. pylori infection may not be a major cause of ITP in children, and the clinical outcomes of children with acute ITP are not affected by receiving anti-H. pylori treatment or not.

Adolescent ; Age Factors ; Child ; Child, Preschool ; Female ; Helicobacter Infections ; complications ; epidemiology ; Helicobacter pylori ; Humans ; Incidence ; Infant ; Male ; Purpura, Thrombocytopenic, Idiopathic ; etiology