Graham-Little-Piccardi-Lasseur Syndrome (GLPLS) is a sub-type of lichen planopilaris, first discovered by Piccardi in 1913, and two years later by Ernst Graham Little in a mutual patient with Lasseur. Lichen planopilaris is the follicular iteration of lichen planus. There are three variants of lichen planopilaris, including GLPLS, frontal fibrosing alopecia, and classic lichen planopilaris. Classic lichen planopilaris is a chronic inflammatory process that results in patchy progressive cicatricial alopecia most commonly found on the scalp. Frontal fibrosing alopecia has band-like cicatricial alopecia of the frontal and temporal zones of the scalp. GLPLS has the specific characteristics of multifocal, patchy, cicatricial alopecia present on the scalp, non-cicatricial alopecia of the axillae, non-cicatricial alopecia of the perineum, and follicular hyperkeratosis of the trunk and extremities. The onset of these symptoms in the outbreak of GLPLS can occur in any order, with a predilection for the development of the hyperkeratotic papules on the trunk and extremities before alopecia occurs in any location.
GLPLS etiology is an enigma. However, most schools of thought believe the symptomatology found in GLPLS is via an autoimmune mechanism which is T-cell mediated. Many mechanisms of lichen planopilaris are present in GLPLS including altered integrin expression and interferon-gamma dysregulation. Inflammation of the hair follicles and altered integrin expression may contribute to the cicatricial alopecia in GLPLS. The altered integrin expression creates the gelatinous consistency of the follicular root resulting in a positive anagen hair pull test of active affected sites. A case report by Rodriguez-Bayona et al. found that there is a strong auto-immune reactivity to a centromere-specific protein INCENP, which leads to the development of mitotic cellular deficits. While further investigation is necessary to determine INCENP auto-antibody prevalence in GLPLS, this marks the first GLPLS linked antibody.
GLPLS is an illness that mainly affects middle-aged Caucasian women with an average age of onset varying from 30 to 70 years old. This variant of lichen planopilaris comprises a small portion of the overall cases. In a case report of 80 lichen planopilaris cases, only one report was consistent with GLPLS. The correlation between GLPLS and multiple other entities exists including hepatitis B vaccination, androgen insensitivity syndrome, HLA DR-1 positivity in a mother and daughter, vitamin A deficiency, hormonal dysfunction, and neuropsychological issues.
Damage to the pilosebaceous unit is a crucial factor in the pathogenesis of GLPLS, a variant of lichen planopilaris. Lesional skin shows increased interferon-gamma-induced chemokines, which recruit the cytotoxic T-cells to the follicular infundibulum. Dysregulation of the interferon-gamma signaling pathway in lichen planopilaris also causes increased MHC class 1 and 2 expression, which leads to increased antigenic presentation to T-cells. Besides interferon-gamma dysregulation, damage to the chromosomal passenger protein INCENP creates inhibition of binding to microtubules, which cause improper localization and function of chromosome passenger complexes.This inability to direct chromosome passenger complexes to the correct locality causes impairment of chromosomal segregation, central spindle formation, and cytoplasmic allocation. These alterations create metaphase abnormalities which lead to a decrease in overall mitotic function.
Histopathologic examination within cicatricial alopecia areas of GLPLS shows a dilated follicular lumen superior to the sebaceous gland with a dense hyperkeratotic plug in the lower portion of the infundibulum. Epithelium in the nearby periphery of the follicular infundibulum shows hypergranulosis, vacuolar degradation of keratinocytes, and a lymphocytic infiltrate that obscures the dermal-epidermal junction with increased dense bundles of collagen at the follicular base. Examination of the hyperkeratotic papules on the trunk and extremities show an expanded keratin-filled follicular opening and vacuolar degradation of adjacent keratinocytes and a lymphohistiocytic infiltrate at the dermal-epidermal junction.
A thorough history and physical exam in patients with GLPLS is a core component of a satisfactory diagnosis. Determining if a patient has experienced significant hair loss, psychosocial stress, or endocrinological abnormalities can lead you to other potential causations of alopecia that may exclude GLPLS as a final diagnosis. Physical examination should include a full body skin check with additional attention paid towards the perineum and axillae for signs of non-cicatricial alopecia. Examination of the trunk and extremities for signs of hyperkeratotic papules with surrounding perifollicular erythema also is a key component of GLPLS. Investigation of the scalp in GLPLS should reveal a multifocal, patchy, and cicatricial alopecia of the scalp. In addition, an anagen hair pull is often positive in GLPLS because of the relatively weak stabilization of the hair follicles of affected individuals.
Skin biopsy in conjunction with physical exam findings are the primary methods of diagnosis in GLPLS. Histology of the cicatricial areas and the hyperkeratotic papules reveals features of lichen planopilaris. Biopsy shows areas of perifollicular inflammation leading to pilosebaceous destruction, with late-stage GLPLS causing corruption of arrector pili muscles. Clinical evaluation of GLPLS shows erythematous follicular papules varying in size from 1 to 4 mm, non-cicatricial alopecia of the perineum and axillae, and patchy cicatricial alopecia on the scalp. Hyperkeratotic papules are typically present on the trunk, thighs, inner arms, outer arms, and wrists with or without pruritus. Initial onset of the hyperkeratotic papules can precede the development of alopecia on the scalp. However, there is no set chronological order of symptoms.
The management of GLPLS remains elusive with no current therapeutic regimen highlighted to be dominant. Treatment focuses on reducing the immunological response before the development of follicular scarring. Novel research has shown that JAK inhibition with tofacitinib leads to the normalization of interferon-mediated T-cell chemotaxis, thus preventing infundibular inflammation. A case series of 8 lichen planopilaris patients treated with a twice a day 5mg dose of tofacitinib reported a 30-94% improvement of disease severity. Zegarska et al. reported a case of a prednisone 30 mg dosage for two weeks then a subsequent reduction to 20 mg of prednisone with psoralen and ultraviolet light A at a dosage of 12 joules. This treatment regimen led to the moderate improvement of the follicular hyperkeratosis of the trunk and extremities. While reduction of the follicular papules occurred, there was no reduction in the cicatricial alopecia of the scalp or the non-cicatricial alopecia in the axillae and perineum. Besides these modalities, there have been reports of the following therapies; intralesional glucocorticoids, topical glucocorticoids, systemic glucocorticoids, cyclosporine, tacrolimus ointment, and systemic retinoids. Most treatment methods lead to a reduction of perifollicular erythema and inflammation without effect on the cicatricial alopecia, or perineal and axillary non-cicatricial alopecia.
The course of GLPLS is often drawn-out and may improve with treatment, however full resolution of alopecic symptoms with current modalities of treatment is rare. Limited data is present to determine the average duration of disease with some cases extending for over 20 years. However, Zegarska et al. report a range of 6 months to 10 years. Prognosis of GLPLS may see a significant improvement in the reduction of hyperkeratotic papules on the trunk and extremities with adequate medical management.
While GLPLS can bring about significant psycho-social stress from the superficial alteration to appearance, there are no known systemic manifestations of the disease. Further study of the INCENP protein and its role in overall mitotic function may lead to the discovery of concomitant morbidities in GLPLS, yet no such comorbidity is present at this moment. The primary lasting complication present in GLPLS is the existence of the follicular scarring that occurs after the infundibular inflammation. This cicatricial portion of the disease manifests on the scalp and leads to permanent damage of the pilosebaceous unit.
Patients suffering from GLPLS require a thorough explanation of prognosis and treatment options to lead them towards realistic expectation for the management of their disease. With current therapy often not affecting the alopecic portion of the disease, many patients forego treatment. While treatment modalities cannot cause improvement towards the prior cicatricial damage, early initiation of a therapeutic agent may lead to a reduction in further progression of the non-cicatricial alopecia, cicatricial alopecia of the scalp, and hyperkeratotic papule formation. Giving patients a clear insight into the goals of GLPLS therapy can improve compliance and lead to better patient-physician relationships.
an interprofessional approach at the initial evaluation of patients with GLPLS is the key to providing optimal care and improved outcomes. Multiple medical specialties can assist in the diagnostic and long-term care processes including dermatologists, dermatopathologists, pharmacists, hair-loss support groups, and psychologists. Satisfactory diagnosis is of utmost importance followed by psycho-social assistance from trained professionals and alopecia support groups. Support groups of patients with alopecia can lead to increased feelings of belonging and reduce psycho-social stress associated with the diagnosis of GLPLS.[level V]
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