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  1. Article ; Online: Letermovir prophylaxis lowers the incidence of Non-CMV infections after allogeneic hematopoietic cell transplantation.

    Bashey, Saffiya Z / Solomon, Scott R / Zhang, Xu / Morris, Lawrence E / Kent Holland, H / Bachier, Lizamarie / Solh, Melhem M

    Bone marrow transplantation

    2024  Volume 59, Issue 4, Page(s) 564–565

    MeSH term(s) Humans ; Incidence ; Cytomegalovirus Infections/drug therapy ; Cytomegalovirus ; Hematopoietic Stem Cell Transplantation/adverse effects ; Antiviral Agents/therapeutic use ; Acetates ; Quinazolines
    Chemical Substances letermovir (1H09Y5WO1F) ; Antiviral Agents ; Acetates ; Quinazolines
    Language English
    Publishing date 2024-01-23
    Publishing country England
    Document type Letter
    ZDB-ID 632854-4
    ISSN 1476-5365 ; 0268-3369 ; 0951-3078
    ISSN (online) 1476-5365
    ISSN 0268-3369 ; 0951-3078
    DOI 10.1038/s41409-024-02201-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Vitamin B-12 and neuropathy in the elderly.

    Solomon, Lawrence R

    The American journal of clinical nutrition

    2016  Volume 103, Issue 5, Page(s) 1378

    MeSH term(s) Aged ; Folic Acid ; Hematinics ; Humans ; Vitamin B 12 ; Vitamin B 12 Deficiency ; Vitamin B Complex
    Chemical Substances Hematinics ; Vitamin B Complex (12001-76-2) ; Folic Acid (935E97BOY8) ; Vitamin B 12 (P6YC3EG204)
    Language English
    Publishing date 2016-04-27
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 280048-2
    ISSN 1938-3207 ; 0002-9165
    ISSN (online) 1938-3207
    ISSN 0002-9165
    DOI 10.3945/ajcn.115.129163
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Immunosuppression-Free Status at 1 Year after Haploidentical Hematopoietic Cell Transplantation with Post-Transplantation Cyclophosphamide.

    Solh, Melhem / Bashey, Asad / Zhang, Xu / Holland, H Kent / Bachier-Rdriguez, Lizamarie / Morris, Lawrence E / Solomon, Scott R

    Transplantation and cellular therapy

    2024  

    Abstract: The development of chronic graft-versus-host disease (GVHD) in 1-year survivors after matched related or unrelated hematopoietic cell transplantation was shown to be associated with higher nonrelapse mortality (NRM) and worse overall survival (OS). The ... ...

    Abstract The development of chronic graft-versus-host disease (GVHD) in 1-year survivors after matched related or unrelated hematopoietic cell transplantation was shown to be associated with higher nonrelapse mortality (NRM) and worse overall survival (OS). The impact of chronic GVHD requiring immunosuppression (IS) for recipients of haploidentical transplantation (HIDT) with post-transplantation cyclophosphamide (PTCy) who have survived to 1 year post-transplantation has not been studied previously and was investigated for this analysis. A total of 322 adult patients who underwent HIDT at our center were included in this study. The effect of IS-free status on post-transplantation outcomes was assessed. The median follow-up for survivors was 63.9 months (range, 18.3 to 165 months). A total of 163 patients (65%) were IS-free at 1 year post-HIDT. Baseline characteristics of this group were similar to those of patients still requiring IS, except for higher percentages of female donor-male recipient pairs (28% versus 15%; P =.03) and female donors (48% versus 30%; P =.008). Logistic regression to identify patients more likely to be on IS at 1 year post-HIDT identified the use of a female donor as a significant risk factor (odds ratio, 2.11; P = .009). In a Cox regression analysis, patients requiring IS at 1 year post-transplantation had higher NRM (hazard ratio [HR], 4.18; 95% confidence interval [CI], 1.80 to 6.72; P < .001) and showed a trend toward worse disease-free survival (DFS) (HR, 1.59; 95% CI, .95 to 2.66; P =.08), with no impact on OS (HR, 1.44; 95% CI, .90 to 2.31; P = .13) or relapse (HR, .77; 95% CI, .37 to 1.61; P = .49). These results indicate that use of a female donor is a significant risk factor for requiring IS at 1 year post-HIDT. Additionally, chronic GVHD requiring IS at 1-year post-HIDT no significant effect on relapse but is associated with higher NRM and a trend toward worse DFS.
    Language English
    Publishing date 2024-03-27
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3062231-1
    ISSN 2666-6367
    ISSN (online) 2666-6367
    DOI 10.1016/j.jtct.2024.03.025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Thrombocytopenia due to low-dose colchicine therapy: A possible drug interaction with nivolumab and implications for supportive care.

    Solomon, Lawrence R

    Acta oncologica (Stockholm, Sweden)

    2015  Volume 54, Issue 8, Page(s) 1235–1237

    MeSH term(s) Antibodies, Monoclonal/adverse effects ; Antineoplastic Agents/adverse effects ; Colchicine/adverse effects ; Drug Interactions ; Gout/drug therapy ; Gout Suppressants/adverse effects ; Humans ; Male ; Melanoma/drug therapy ; Middle Aged ; Thrombocytopenia/chemically induced
    Chemical Substances Antibodies, Monoclonal ; Antineoplastic Agents ; Gout Suppressants ; nivolumab (31YO63LBSN) ; Colchicine (SML2Y3J35T)
    Language English
    Publishing date 2015
    Publishing country England
    Document type Case Reports ; Letter
    ZDB-ID 896449-x
    ISSN 1651-226X ; 0349-652X ; 0284-186X ; 1100-1704
    ISSN (online) 1651-226X
    ISSN 0349-652X ; 0284-186X ; 1100-1704
    DOI 10.3109/0284186X.2014.1002572
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Low Cobalamin Levels as Predictors of Cobalamin Deficiency: Importance of Comorbidities Associated with Increased Oxidative Stress.

    Solomon, Lawrence R

    The American journal of medicine

    2016  Volume 129, Issue 1, Page(s) 115.e9–115.e16

    Abstract: Background: Cobalamin (B12) deficiency can lead to irreversible neurocognitive changes if unrecognized. Screening involves measurement of serum cobalamin levels, but the sensitive metabolic indicators of cobalamin deficiency, methylmalonic acid (MMA) ... ...

    Abstract Background: Cobalamin (B12) deficiency can lead to irreversible neurocognitive changes if unrecognized. Screening involves measurement of serum cobalamin levels, but the sensitive metabolic indicators of cobalamin deficiency, methylmalonic acid (MMA) and homocysteine (HCys), may be normal when cobalamin values are low and elevated when cobalamin values are normal. Because cobalamin is inactivated by oxidation, the relationship between these metabolites and comorbidities associated with increased oxidative stress (oxidant risks) in subjects with low and low-normal cobalamin levels was studied.
    Methods: A retrospective record-review was conducted of community-dwelling adults evaluated for cobalamin deficiency during a 12-year period with serum cobalamin values in the low (≤ 200 pg/mL; n = 49) or low-normal (201-300 pg/mL; n = 187) range and concurrent measurement of MMA.
    Results: When "No" oxidant risk was present, elevated MMA (>250 nmol/L) and HCys (>12.1 μmol/L) values occurred in 50% and 30% of subjects, respectively (P <.01). In contrast, when "Three or More" oxidant risks were present, mean MMA and HCys values were significantly higher, and elevated MMA and HCys values occurred in 84% and 78% of these subjects, respectively (P ≤.012). Pharmacologic doses of cyanocobalamin significantly decreased metabolite values in ≥ 94% of treated subjects.
    Conclusion: In subjects with low or low-normal cobalamin values, metabolic evidence of cobalamin deficiency is more frequent when 3 or more oxidant risks are present. Thus, defining a low serum cobalamin level to screen for cobalamin deficiency may be a "moving target" due to the variable presence and severity of often subtle, confounding clinical conditions in individual subjects.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Biomarkers/blood ; Comorbidity ; Female ; Homocysteine/blood ; Humans ; Male ; Methylmalonic Acid/blood ; Middle Aged ; Oxidative Stress ; Retrospective Studies ; Vitamin B 12/blood ; Vitamin B 12/therapeutic use ; Vitamin B 12 Deficiency/blood ; Vitamin B 12 Deficiency/diagnosis ; Vitamin B 12 Deficiency/drug therapy ; Young Adult
    Chemical Substances Biomarkers ; Homocysteine (0LVT1QZ0BA) ; Methylmalonic Acid (8LL8S712J7) ; Vitamin B 12 (P6YC3EG204)
    Language English
    Publishing date 2016-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80015-6
    ISSN 1555-7162 ; 1873-2178 ; 0002-9343 ; 1548-2766
    ISSN (online) 1555-7162 ; 1873-2178
    ISSN 0002-9343 ; 1548-2766
    DOI 10.1016/j.amjmed.2015.07.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Functional vitamin B12 deficiency in advanced malignancy: implications for the management of neuropathy and neuropathic pain.

    Solomon, Lawrence R

    Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer

    2016  Volume 24, Issue 8, Page(s) 3489–3494

    Abstract: Background and aim: Treatment of neuropathic pain and chemotherapy-induced peripheral neuropathy (CIPN) in patients with malignancy is often unsuccessful. Functional vitamin B12 deficiency, defined by elevated levels of the B12-dependent metabolites, ... ...

    Abstract Background and aim: Treatment of neuropathic pain and chemotherapy-induced peripheral neuropathy (CIPN) in patients with malignancy is often unsuccessful. Functional vitamin B12 deficiency, defined by elevated levels of the B12-dependent metabolites, methylmalonic acid (MMA), and/or homocysteine, despite normal B12 values, may cause neuropathy and is associated with disorders linked to increased oxidative stress. Since both cancer and neurotoxic antineoplastic agents increase oxidative stress, a role for functional B12 deficiency in CIPN was considered.
    Methods: A retrospective record review of 241 cancer subjects evaluated by the adult palliative care service for B12 deficiency in a university-based cancer center between October 2008 and September 2012 with measurement of B12, MMA, and/or homocysteine levels was performed.
    Results: B12 values were elevated (>900 pg/ml) in 30 % and low (≤300 pg/ml) in 17 % of subjects tested. Elevated MMA (>250 nmol/l) and homocysteine (>12.1 μmol/l) levels occurred in 38 and 23 % of subjects respectively and at least one metabolite was increased in 54 % of evaluable subjects. Even when B12 values were ≥1500 pg/ml (n = 36), increased MMA and homocysteine values occurred in 31 and 23 % of subjects, respectively. B12 therapy decreased MMA values in all four subjects studied and improved neurologic findings in the three subjects tested.
    Conclusions: Functional vitamin B12 deficiency is common in subjects with advanced malignancy. Further studies are needed to determine if this disorder is a risk factor for CIPN and if B12 therapy has a role in the management and/or prevention of neuropathy and neuropathic pain in this population.
    MeSH term(s) Aged ; Female ; Humans ; Male ; Methylmalonic Acid/therapeutic use ; Middle Aged ; Neoplasms/complications ; Neoplasms/drug therapy ; Neuralgia/chemically induced ; Neuralgia/drug therapy ; Peripheral Nervous System Diseases/chemically induced ; Peripheral Nervous System Diseases/drug therapy ; Retrospective Studies ; Risk Factors ; Vitamin B 12/therapeutic use ; Vitamin B 12 Deficiency/etiology
    Chemical Substances Methylmalonic Acid (8LL8S712J7) ; Vitamin B 12 (P6YC3EG204)
    Language English
    Publishing date 2016-08
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1134446-5
    ISSN 1433-7339 ; 0941-4355
    ISSN (online) 1433-7339
    ISSN 0941-4355
    DOI 10.1007/s00520-016-3175-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Vitamin B12-responsive neuropathies: A case series.

    Solomon, Lawrence R

    Nutritional neuroscience

    2016  Volume 19, Issue 4, Page(s) 162–168

    Abstract: Objectives: Neuropathies often accompany vitamin B12 deficiency. Since many neuropathies are linked to oxidative stress and since B12 has both antioxidant and neurotrophic properties, B12 may also be effective treatment in non-deficient subjects. Thus, ... ...

    Abstract Objectives: Neuropathies often accompany vitamin B12 deficiency. Since many neuropathies are linked to oxidative stress and since B12 has both antioxidant and neurotrophic properties, B12 may also be effective treatment in non-deficient subjects. Thus, the characteristics and predictors of B12-responsive neuropathies and their relationship to disorders associated with increased oxidative stress (oxidant risks) were examined.
    Methods: Retrospective review of 78 subjects with neurological abnormalities treated with B12 and evaluated by the measurement of B12 and the B12-dependent metabolites, methylmalonic acid (MMA), and homocysteine.
    Results: Sixty-five subjects had neurological improvement (83%), including 35 with other known causes of neuropathy. Only two responders had B12-responsive macrocytosis. Pretherapy B12, MMA, and homocysteine values were normal in 72, 33 and 54% of responders, with all three normal in 23%. Moreover, B12 therapy did not significantly decrease elevated MMA and homocysteine levels in 20 and 37%, respectively, of responders tested but did decrease both metabolites in 75% of evaluable non-responders. At least one oxidant risk was present in 41 of the 46 responders with normal B12 levels (89%). Oral therapy was effective, but parenteral B12 improved responses in four subjects.
    Discussion: B12-responsive neuropathies are thus (1) common even when confounding disorders are present; (2) dissociated from the presence of hematological abnormalities; (3) dissociated from the presence of B12-responsive metabolical abnormalities; and (4) associated with the presence of oxidant risks when B12 levels are normal. Since no predictors of responses to B12 therapy were identified, empiric trials with parenteral B12 should be considered in appropriate subjects.
    MeSH term(s) Administration, Oral ; Adult ; Aged ; Aged, 80 and over ; Antioxidants/administration & dosage ; Antioxidants/analysis ; Antioxidants/pharmacokinetics ; Antioxidants/therapeutic use ; Biotransformation ; Female ; Homocysteine/blood ; Humans ; Injections, Intramuscular ; Male ; Medical Records ; Methylmalonic Acid/blood ; Middle Aged ; Nervous System Diseases/blood ; Nervous System Diseases/drug therapy ; Nervous System Diseases/etiology ; Nutritional Status ; Oxidative Stress/drug effects ; Retrospective Studies ; Risk Factors ; Vitamin B 12/administration & dosage ; Vitamin B 12/blood ; Vitamin B 12/pharmacokinetics ; Vitamin B 12/therapeutic use ; Vitamin B 12 Deficiency/blood ; Vitamin B 12 Deficiency/drug therapy ; Vitamin B 12 Deficiency/physiopathology
    Chemical Substances Antioxidants ; Homocysteine (0LVT1QZ0BA) ; Methylmalonic Acid (8LL8S712J7) ; Vitamin B 12 (P6YC3EG204)
    Language English
    Publishing date 2016-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 1447449-9
    ISSN 1476-8305 ; 1028-415X
    ISSN (online) 1476-8305
    ISSN 1028-415X
    DOI 10.1179/1476830515Y.0000000006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Vitamin B12 and peripheral nerve function in elderly adults: "functional" B12 deficiency as a confounding variable.

    Solomon, Lawrence R

    Journal of the American Geriatrics Society

    2013  Volume 61, Issue 2, Page(s) 310–311

    MeSH term(s) Female ; Humans ; Male ; Peripheral Nervous System Diseases/blood ; Peripheral Nervous System Diseases/etiology ; Vitamin B 12 Deficiency/blood ; Vitamin B 12 Deficiency/complications
    Language English
    Publishing date 2013-02
    Publishing country United States
    Document type Comment ; Letter
    ZDB-ID 80363-7
    ISSN 1532-5415 ; 0002-8614
    ISSN (online) 1532-5415
    ISSN 0002-8614
    DOI 10.1111/jgs.12092
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: More on failures of cobalamin assays in pernicious anemia.

    Solomon, Lawrence R

    The New England journal of medicine

    2012  Volume 367, Issue 16, Page(s) 1570; author reply 1571

    MeSH term(s) Anemia, Pernicious/diagnosis ; False Negative Reactions ; Humans ; Vitamin B 12/blood
    Chemical Substances Vitamin B 12 (P6YC3EG204)
    Language English
    Publishing date 2012-10-18
    Publishing country United States
    Document type Comment ; Letter
    ZDB-ID 207154-x
    ISSN 1533-4406 ; 0028-4793
    ISSN (online) 1533-4406
    ISSN 0028-4793
    DOI 10.1056/NEJMc1210169#SA2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Revised HLA-DP TCE-Core Permissiveness Model Better Defines Relapse Risk and Survival following Haploidentical Transplant.

    Solomon, Scott R / Aubrey, Michael T / Bachier-Rodriguez, Lizamarie / Solh, Melhem M / Jackson, Katelin C / Zhang, Xu / Roark, Christina L / Holland, H Kent / Morris, Lawrence E / Bashey, Asad

    Transplantation and cellular therapy

    2024  

    Abstract: The presence of an HLA-DPB1 nonpermissive mismatch (NPMM) by the TCE-3 model has been associated with improved survival following haploidentical donor transplantation (HIDT) using post-transplantation cyclophosphamide (PTCy). With the development of a ... ...

    Abstract The presence of an HLA-DPB1 nonpermissive mismatch (NPMM) by the TCE-3 model has been associated with improved survival following haploidentical donor transplantation (HIDT) using post-transplantation cyclophosphamide (PTCy). With the development of a revised model (TCE-Core) that further separates TCE-3 "group 3" alleles into "core" (C) and "noncore" (NC) alleles, a formerly permissive mismatch (PMM) resulting from group 3 alleles in both donor and recipient is now considered a C-NPMM if 1 or more of those alleles is NC. We aimed to study the additional effect of HLA-DPB1 C-NPMM according to the TCE-Core algorithm, as well as the directional vector of the mismatch, on outcomes following HIDT. To this end, we analyzed 242 consecutive HIDT recipients with acute leukemia or myelodysplastic syndrome who underwent transplantation between 2005 and 2021 (median age, 51 years; range, 19 to 80 years). The median follow-up was 62 months (range, 23 to 199 months). Of the 136 HIDTs classified as PMM by TCE-3, 73 were reclassified as a C-NPMM by the TCE-Core algorithm, of which 36 were in the graft-versus host (GVH) vector (37 were host-versus-graft [HVG] only). Given comparable survival between conventional NPMM and C-NPMM, GVH/bidirectional were analyzed together (nonpermissive). HVG-only C-NPMM were combined with HLA-DPB1-matched and PMM (permissive) because of similar outcomes. The presence of a TCE-Core-defined nonpermissive HLA-DP mismatch resulted in superior 5-year overall survival (OS) (66% versus 47%) and disease-free survival (DFS) (60% versus 43%). Compared to the conventional TCE-3 algorithm, TCE-Core identified a higher percentage of nonpermissive transplants (38% versus 23%) and better discriminated outcomes between nonpermissive and permissive status, with a larger difference in survival outcomes using TCE-Core compared to TCE-3 (OS Δ, 18.3% versus 12.7%; DFS Δ, 16.5% versus 8.5%). In multivariable analysis (MVA), a nonpermissive TCE-Core mismatch led to improved OS (hazard ratio [HR], .54; P = .003) and DFS (HR, .62; P = .013), largely due to decreased relapse risk (HR, .63; P = .049). In contrast, nonrelapse mortality (NRM) and graft-versus-host disease (GVHD) outcomes were not significantly impacted. In summary, the presence of nonpermissive TCE-Core HLA-DP mismatch strongly predicts survival following PTCy-based HIDT, owing to a reduction in relapse risk without a corresponding increase in GVHD or NRM. As a donor selection tool, TCE-Core appears to better discriminate HIDT outcomes while at the same time identifying a larger percentage of the potential donor pool.
    Language English
    Publishing date 2024-03-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3062231-1
    ISSN 2666-6367
    ISSN (online) 2666-6367
    DOI 10.1016/j.jtct.2024.03.027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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