Resource-Stratified Diagnostics in India: Current Practices and Aspirations for a National Standard

Purpose

As international health systems set goals to improve and expand access to cancer care services, the global health community has applied evidence-based principles to develop resource-stratified pathways for cancer detection, diagnosis, and treatment. The Breast Health Global Initiative (BHGI) defines four detailed sets of infrastructure at the levels of basic, limited, enhanced, and maximal. Operationalizing these pathways to improve and expand breast cancer care requires an assessment of current resource availability and use, as well as an understanding of how clinical stakeholders value and prioritize various modalities. This study adapted the BHGI framework for breast cancer diagnostics to characterize the natural state of health system capabilities in India. This work aims to contribute to the validation of the resource stratification schema while collecting implicit practitioner impressions of an aspirational resource level, as would be codified by a national standard.

Methods

We interviewed oncologists at public and private hospitals in six urban areas throughout India with a multisection survey tool about the effects of cancer care infrastructure on patient care. In this section, respondents filled out a grid representation of 30 BHGI 2.5 diagnostic modalities divided into clinical tools, imaging and laboratory tests, and pathology. Respondents indicated whether they currently used each modality, and whether they would recommend that this should be included in a national standard of breast cancer care for India.

Results

At least three fourths of respondents indicated that they personally use 21 of the diagnostic modalities (n = 52), but only recommended 15 modalities for the national standard (n = 50). The top 11 modalities currently used included six basic, three limited, and two enhanced, whereas the top 11 modalities recommended for the national standard included four basic, one limited, three enhanced, and three maximal.

Conclusion

Diagnostic modalities consistently used by urban oncologists are not fully congruent with the group’s collective vision for a national standard of care, nor do the oncologists recommend a consistently more basic or limited national approach compared with urban practice. These heterogeneous results indicate that expanding breast cancer care in India will likely require dynamic recalibration of goal resource level definitions across the nodes of each regional referral network.

AUTHOR’S DISCLOSURES OF POTENTIAL CONFLICTS OF INTEREST

The following represents disclosure information provided by authors of this manuscript. All relationships are considered compensated. Relationships are self-held unless noted. I = Immediate Family Member, Inst = My Institution. Relationships may not relate to the subject matter of this manuscript. For more information about ASCO's conflict of interest policy, please refer to www.asco.org/rwc or ascopubs.org/jco/site/ifc . No COIs for the author.

Magnetometry via spin-mechanical coupling in levitated optomechanics

We analyze magnetometry using an optically levitated nanodiamond. We consider a configuration where a magnetic field gradient couples the mechanical oscillation of the diamond with its spin degree of freedom provided by a nitrogen vacancy center. First, we investigate the measurement of the position spectrum of the mechanical oscillator. We find that conditions of ultrahigh vacuum and feedback cooling allow a magnetic field gradient sensitivity of 1μTm^-1/Hz. At high pressure and room temperature, this sensitivity degrades and can attain a value of the order of 100mTm^-1/Hz. Subsequently, we characterize the magnetic field gradient sensitivity obtainable by maneuvering the spin degrees of freedom using Ramsey interferometry. We find that this technique can offer photon-shot noise and spin-projection noise limited magnetic field gradient sensitivity of 100μTm^-1/Hz. We conclude that this hybrid levitated nanomechanical magnetometer provides a favorable and versatile platform for sensing applications.

Cost-Effectiveness of Pediatric Cancer Treatment in Tanzania: An Economic Analysis

Abstract 52

Background:

Despite the high burden of pediatric cancer in low- and middle-income countries, the number of facilities at which children can obtain treatment remains distressingly low. Understanding the costs and economic value of pediatric cancer treatment may assist policy makers to maximize the value of investments in health with informed resource allocation decisions. We examined the direct and indirect costs, cost-effectiveness, and societal economic benefit of diagnosing and treating children with cancer in Tanzania at the Bugando Medical Center, one of only two hospitals in the country with a pediatric oncology unit.

Methods:

A retrospective chart review of hospital admissions and clinic visits from January 2010 to August 2014 was performed. Costs were recorded for all items that were billed to the patient for laboratory studies, medications, imaging, pathology, surgeries, and hospital stay. Travel costs were estimated for each patient on the basis of a self-reported home address. All costs were converted from Tanzanian shillings to 2016 US dollars. Health outcomes were measured as disability-adjusted life-year (DALY) averted. We calculated the cost-effectiveness ratio of treatment versus performing no intervention as well as the societal economic benefit using a human capital approach and considering the per capita gross national product in Tanzania.

Results:

We identified costs for a subset of 127 patients, 64% of which were male (n = 81). Mean age at first clinical presentation was 6.9 years. Mean cost for treatment was $218 ± $145, with an average of 10.4 ± 8.9 DALYs averted per patient. Total cost-effectiveness ratio was $21/DALY, and the mean societal economic benefit was $27,118 ± $23,412.

Conclusion:

Our findings show that pediatric cancer treatment in Tanzania is cost-effective and offers substantial economic value.

AUTHORS' DISCLOSURES OF POTENTIAL CONFLICTS OF INTEREST

No COIs from the authors.

Exploiting Le Chatelier's principle for a one-pot synthesis of nontoxic HHogGNPs with the sharpest nanoscopic features suitable for tunable plasmon spectroscopy and high throughput SERS sensing

Le Chatelier's principle leads to the generation of nontoxic, stable and highly anisotropic HHogGNPs.

Clinico-Hematologic Profile of Factor XIII-Deficient Patients

A retrospective analysis of clinico-hematologic parameters of 18 factor XIII-deficient patients was carried out. The hematologic tests included activated partial thromboplastin time (APTT), prothrombin time (PT), and clot solubility. Laboratory diagnosis of FXIII deficiency was made where bleeding time, PT, APTT, and thrombin time were normal and the clot solubility test result with 5M urea was positive. Factor XIII level with family screening was performed using commercially available kits. History of prolonged bleeding from the umbilical stump was present in four (22.2%) patients. The most common site of bleeding was the skin (11 of 18 patients). Three patients were given prophylaxis (FFP in two, factor XIII in one). A high prevalence of recurrent abortion in female pa tients with FXIII deficiency (two of the three patients in this study) was observed.

Clinicohematologic Spectrum in Patientswith Lupus Anticoagulant

A retrospective analysis of clinicohematologic parameters of 25 patients with lupus anticoagulant was carried out. The hematologic tests included dilute Russel viper venom test (dRVVT), kaolin clotting time (KCT), activated partial thromboplastin time, and prothrombin time. The diagnosis of lupus anticoagulants was based on the presence of prolonged KCT/dRVVT, its absence of correction with normal plasma and correction by phospholipids. Specific factor assays and platelet aggregation studies were performed wherever required. Ten patients (40%) had thrombosis, which was venous in 5 (50%) and arterial in 4 (40%). One patient (10%) had both arterial and venous thrombosis and presented with catastrophic antiphospholipid syndrome. Eighteen female patients conceived. Four (22%) of these had recurrent first trimester abortion. Five (20%) patients had bleeding manifestations. One (4%) of these had hypoprothrombinemia and was diagnosed to have hypoprothrombinemia lupus anticoagulant syndrome. However in two of these patients, no cause of bleeding could be identified other than the presence of lupus anticoagulants. It is concluded that patients with lupus anticoagulant have a varied spectrum of hemostatic disorders. Bleeding may sometimes occur in these patients due to associated thrombocytopenia or associated factor inhibitors. Rarely, it may occur due to presence of lupus anticoagulants alone.

Direct experimental observation of salt induced aspect ratio tunable PFPT silver-nanowire formation: SERS-based ppt level Hg2+ sensing from ground water

A common salt induced aspect ratio tunable PFPT silver nanowire synthesis with a plausible explanation based on real-time direct experimental observation finds application as a potential assay for ppt level Hg(ii) sensing from ground water.

Modelling and estimation of HIV prevalence and number of people living with HIV in India, 2010-2011

This paper provides HIV estimation methodology used in India and key HIV estimates for 2010-2011. We used a modified version of the Spectrum tool that included an Estimation and Projection Package as part of its AIDS Impact Module. Inputs related to population size, age-specific pattern of fertility, gender-ratio at birth, age and gender-specific pattern of mortality, and volume and age-gender distribution of net migration were derived from census records, the Sample Registration System and large-scale demographic health surveys. Epidemiological and programmatic data were derived from HIV sentinel surveillance, large-scale epidemiological surveys and the programme management information system. Estimated adult HIV prevalence retained a declining trend in India, following its peak in 2002 at a level of 0.41% (within bounds 0.35-0.47%). By 2010 and 2011, it levelled at estimates of 0.28% (0.24-0.34%) and 0.27% (0.22-0.33%), respectively. The estimated number of people living with HIV (PLHIV) reduced by 8% between 2007 and 2011. While children accounted for approximately 6.3% of total HIV infections in 2007, this proportion increased to about 7% in 2011. With changing priorities and epidemic patterns, the programme has to customise its strategies to effectively address the emerging vulnerabilities and adapt them to suit the requirements of different geographical regions.

Ray transfer matrix for a spiral phase plate

We present a ray transfer matrix for a spiral phase plate. Using this matrix we determine the stability of an optical resonator made of two spiral phase plates and trace stable ray orbits in the resonator. Our results should be relevant to laser physics, optical micromanipulation, quantum information, and optomechanics.

Conditioned medium as a strategy for human stem cells chondrogenic differentiation

Paracrine signalling from chondrocytes has been reported to increase the synthesis and expression of cartilage extracellular matrix (ECM) by stem cells. The use of conditioned medium obtained from chondrocytes for stimulating stem cells chondrogenic differentiation may be a very interesting alternative for moving into the clinical application of these cells, as chondrocytes could be partially replaced by stem cells for this type of application. In the present study we aimed to achieve chondrogenic differentiation of two different sources of stem cells using conditioned medium, without adding growth factors. We tested both human bone marrow-derived mesenchymal stem cells (hBSMCs) and human Wharton's jelly-derived stem cells (hWJSCs). Conditioned medium obtained from a culture of human articular chondrocytes was used to feed the cells during the experiment. Cultures were performed in previously produced three-dimensional (3D) scaffolds, composed of a blend of 50:50 chitosan:poly(butylene succinate). Both types of stem cells were able to undergo chondrogenic differentiation without the addition of growth factors. Cultures using hWJSCs showed significantly higher GAGs accumulation and expression of cartilage-related genes (aggrecan, Sox9 and collagen type II) when compared to hBMSCs cultures. Conditioned medium obtained from articular chondrocytes induced the chondrogenic differentiation of MSCs and ECM formation. Obtained results showed that this new strategy is very interesting and should be further explored for clinical applications.

Oncologists’ perceptions of cost and cancer care in India: A comparison of private practice (PPOs) and non-private practice oncologists (NPPOs)

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Background: Cancer incidence is increasing in India, where most patients lack health insurance. Little is known about how out-of-pocket costs affect cancer treatment decision-making by Indian physicians and patients. Methods: We conducted a cross-sectional survey of PPOs and NPPOs in 6 Indian metropolitan areas. Oncologists were surveyed about cost of care and cost discussions with patients. Descriptive statistics and Fisher’s exact tests were used to describe differences in cost perceptions and discussions. Results: 59 oncologists were surveyed (61% response). 78% (n=46) were men. 59% (n=34) were PPOs, and 41% (n=25) were NPPOs. Oncologists routinely discussed cost with their patients (96%, n=57); PPOs and NPPOs were equally likely to do so (p=1.00). According to oncologists, patients seeing NPPOs or PPOs were equally likely to discuss costs before deciding on treatment (p=0.14). 55% (n=32/58) of oncologists discussed cost with patients before prescribing diagnostic tests, and 79% (n=46/58) discussed cost before making treatment decisions. PPOs were more likely than NPPOs to believe that costs may discourage patients from presenting for an initial cancer evaluation (88% vs. 44%; p=0.0009). However, 71% of NPPOs (vs 44% of PPOs; p=0.06) believed that, once diagnosed, more than half of their patients found costs to be a barrier to receiving standard care. Oncologists reported the most costly components of care for their patients to be: 1) chemotherapy; 2) radiotherapy and diagnostic imaging (tied); 4) surgery; 5) indirect costs from lost wages and inpatient admission (tied). When asked about how to reduce costs, oncologists identified: lowering chemotherapy prices (88%, n=52); judicious use/ lowering cost of diagnostics (36%, n=21); optimizing the referral process (22%, n=13). Insurance/subsidies were identified by 15% (n=8). Conclusions: Cost is routinely discussed by Indian patients and oncologists across care settings. Cost can be a deterrent to initial evaluation and a barrier to receiving standard care. Oncologists more commonly suggested reducing costs of diagnostics and therapeutics, rather than expanding insurance or changing referral practices.

Isolated exon 8 deletion in type 1 spinal muscular atrophy with bilateral optic atrophy: unusual genetic mutation leading to unusual manifestation?

Proximal spinal muscular atrophy (SMA) or type 1 SMA is a fatal autosomal recessive disorder usually caused by homozygous deletion of exons 7 and 8 in the survivor motor neuron (SMN) gene. Additional deletion of the neuronal apotosis inhibitory protein (NAIP) gene exacerbates the clinical severity. Isolated exon 8 deletion has been reported in a single case series of SMA types 2 and 3 and never with SMA type 1. While extraocular muscles are typically spared, there are a few case reports documenting associated external ophthalmoplegia. Optic atrophy is a hitherto unreported association of SMA. We report a 10-month-old male infant with SMA type 1 with optic atrophy due to isolated deletion of exon 8 of the SMN gene with intact exon 7 and NAIP gene.

IQGAP1 is necessary for pulmonary vascular barrier protection in murine acute lung injury and pneumonia

We recently reported that integrin α(v)β(3) is necessary for vascular barrier protection in mouse models of acute lung injury and peritonitis. Here, we used mass spectrometric sequencing of integrin complexes to isolate the novel β(3)-integrin binding partner IQGAP1. Like integrin β(3), IQGAP1 localized to the endothelial cell-cell junction after sphingosine-1-phosphate (S1P) treatment, and IQGAP1 knockdown prevented cortical actin formation and barrier enhancement in response to S1P. Furthermore, knockdown of IQGAP1 prevented localization of integrin α(v)β(3) to the cell-cell junction. Similar to β(3)-null animals, IQGAP1-null mice had increased pulmonary vascular leak compared with wild-type controls 3 days after intratracheal LPS. In an Escherichia coli pneumonia model, IQGAP1 knockout mice had increased lung weights, lung water, and lung extravascular plasma equivalents of (125)I-labeled albumin compared with wild-type controls. Taken together, these experiments indicate that IQGAP1 is necessary for S1P-mediated vascular barrier protection during acute lung injury and is required for junctional localization of the barrier-protective integrin α(v)β(3).

Adherence to antiretroviral therapy and its correlates among HIV-infected children at an HIV clinic in New Delhi

BACKGROUND

With the introduction of antiretroviral therapy (ART), the mortality and morbidity of HIV/AIDS have decreased markedly. However, high adherence to ART (>95%) is necessary for a good therapeutic outcome. There is a paucity of data on paediatric adherence to ART and its correlates from developing countries, particularly India.

AIM

To determine the rate of adherence to ART in HIV-infected Indian children and the factors associated with adherence.

METHODS

A cross-sectional study was conducted at an ART clinic in New Delhi, north India. Caregivers of 90 children were interviewed using a pre-designed, structured questionnaire and checklist. The primary measure of adherence was 4-day caregiver's recall. Adherence rates were correlated with 3-monthly CD4 counts.

RESULTS

Mean (SD, range) adherence was 91·4% (12·3, 75-100%). Adherence was low (<95%) in 31 (34·4%) patients. On multivariate logistic regression analysis, increasing time since ART initiation (OR 1·08, 95% CI 1·02-1·13), low caregiver educational status (OR 4·19, 95% CI 1·37-10·88), orphanhood (OR 3·57, 95% CI 1·13-9·25), efavirenz-based ART regimens (OR 3·65, 95% CI 1·05-10·69) and female gender (OR 3·15, 95% CI 1·03-7·68) were associated with lower adherence. The rise in CD4 count after ART initiation was more marked in the high adherence group, with the difference in the two groups becoming statistically significant after 6 months of ART (median CD4 count 698 vs 355, p=0·016).

CONCLUSIONS

It is possible to achieve high adherence to ART in a resource-limited setting. Caregiver recall is a reliable and inexpensive tool for measuring adherence. Paediatric adherence to ART is influenced by numerous factors and larger studies are needed to address the issue in India.